Home / 129,400,925.90-193,886,155.25-90,981,875.03

Finding the Fourth Proportional to 129,400,925.90, 193,886,155.25 and 90,981,875.03

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Solution

The fourth proportional to 129,400,925.90, 193,886,155.25 and 90,981,875.03 is: 136,321,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,400,925.90 : 193,886,155.25 = 90,981,875.03 : x
  2. Step 2: Convert to fraction form
    129,400,925.90/193,886,155.25 = 90,981,875.03/x
  3. Step 3: Cross multiply
    129,400,925.90x = 193,886,155.25 × 90,981,875.03
  4. Step 4: Simplify right side
    129,400,925.90x = 17,640,125,945,578,340
  5. Step 5: Solve for x
    x = 17,640,125,945,578,340/129,400,925.90
  6. Step 6: Final answer
    x = 136,321,481.66

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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.