Home / 120,042.08-165,618.24-72,277.28

Finding the Fourth Proportional to 120,042.08, 165,618.24 and 72,277.28

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Solution

The fourth proportional to 120,042.08, 165,618.24 and 72,277.28 is: 99,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,042.08 : 165,618.24 = 72,277.28 : x
  2. Step 2: Convert to fraction form
    120,042.08/165,618.24 = 72,277.28/x
  3. Step 3: Cross multiply
    120,042.08x = 165,618.24 × 72,277.28
  4. Step 4: Simplify right side
    120,042.08x = 11,970,435,905.59
  5. Step 5: Solve for x
    x = 11,970,435,905.59/120,042.08
  6. Step 6: Final answer
    x = 99,718.66

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1.5x scale

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.