Home / 104,764.32-144,640.08-72,921.60

Finding the Fourth Proportional to 104,764.32, 144,640.08 and 72,921.60

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Solution

The fourth proportional to 104,764.32, 144,640.08 and 72,921.60 is: 100,677.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,764.32 : 144,640.08 = 72,921.60 : x
  2. Step 2: Convert to fraction form
    104,764.32/144,640.08 = 72,921.60/x
  3. Step 3: Cross multiply
    104,764.32x = 144,640.08 × 72,921.60
  4. Step 4: Simplify right side
    104,764.32x = 10,547,386,057.73
  5. Step 5: Solve for x
    x = 10,547,386,057.73/104,764.32
  6. Step 6: Final answer
    x = 100,677.27

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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.