Home / 142,600,826,175.51-196,793,859,537.54-78,373,827,041.88

Finding the Fourth Proportional to 142,600,826,175.51, 196,793,859,537.54 and 78,373,827,041.88

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Solution

The fourth proportional to 142,600,826,175.51, 196,793,859,537.54 and 78,373,827,041.88 is: 108,158,475,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,600,826,175.51 : 196,793,859,537.54 = 78,373,827,041.88 : x
  2. Step 2: Convert to fraction form
    142,600,826,175.51/196,793,859,537.54 = 78,373,827,041.88/x
  3. Step 3: Cross multiply
    142,600,826,175.51x = 196,793,859,537.54 × 78,373,827,041.88
  4. Step 4: Simplify right side
    142,600,826,175.51x = 15,423,487,910,299,188,592,640
  5. Step 5: Solve for x
    x = 15,423,487,910,299,188,592,640/142,600,826,175.51
  6. Step 6: Final answer
    x = 108,158,475,122.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.