Home / 136,957.15-205,145.07-89,404.21

Finding the Fourth Proportional to 136,957.15, 205,145.07 and 89,404.21

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Solution

The fourth proportional to 136,957.15, 205,145.07 and 89,404.21 is: 133,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,957.15 : 205,145.07 = 89,404.21 : x
  2. Step 2: Convert to fraction form
    136,957.15/205,145.07 = 89,404.21/x
  3. Step 3: Cross multiply
    136,957.15x = 205,145.07 × 89,404.21
  4. Step 4: Simplify right side
    136,957.15x = 18,340,832,918.74
  5. Step 5: Solve for x
    x = 18,340,832,918.74/136,957.15
  6. Step 6: Final answer
    x = 133,916.58

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1.5x scale

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.