Home / 142,738,498.88-196,988,875.08-80,859,345.92

Finding the Fourth Proportional to 142,738,498.88, 196,988,875.08 and 80,859,345.92

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Solution

The fourth proportional to 142,738,498.88, 196,988,875.08 and 80,859,345.92 is: 111,591,418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,738,498.88 : 196,988,875.08 = 80,859,345.92 : x
  2. Step 2: Convert to fraction form
    142,738,498.88/196,988,875.08 = 80,859,345.92/x
  3. Step 3: Cross multiply
    142,738,498.88x = 196,988,875.08 × 80,859,345.92
  4. Step 4: Simplify right side
    142,738,498.88x = 15,928,391,592,485,390
  5. Step 5: Solve for x
    x = 15,928,391,592,485,390/142,738,498.88
  6. Step 6: Final answer
    x = 111,591,418.70

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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.