Home / 112,156,721.20-168,235,081.80-61,138,385.20

Finding the Fourth Proportional to 112,156,721.20, 168,235,081.80 and 61,138,385.20

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Solution

The fourth proportional to 112,156,721.20, 168,235,081.80 and 61,138,385.20 is: 91,707,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,156,721.20 : 168,235,081.80 = 61,138,385.20 : x
  2. Step 2: Convert to fraction form
    112,156,721.20/168,235,081.80 = 61,138,385.20/x
  3. Step 3: Cross multiply
    112,156,721.20x = 168,235,081.80 × 61,138,385.20
  4. Step 4: Simplify right side
    112,156,721.20x = 10,285,621,235,241,910
  5. Step 5: Solve for x
    x = 10,285,621,235,241,910/112,156,721.20
  6. Step 6: Final answer
    x = 91,707,577.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.