Home / 103,545.47-155,219.78-66,000.15

Finding the Fourth Proportional to 103,545.47, 155,219.78 and 66,000.15

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Solution

The fourth proportional to 103,545.47, 155,219.78 and 66,000.15 is: 98,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,545.47 : 155,219.78 = 66,000.15 : x
  2. Step 2: Convert to fraction form
    103,545.47/155,219.78 = 66,000.15/x
  3. Step 3: Cross multiply
    103,545.47x = 155,219.78 × 66,000.15
  4. Step 4: Simplify right side
    103,545.47x = 10,244,528,927.97
  5. Step 5: Solve for x
    x = 10,244,528,927.97/103,545.47
  6. Step 6: Final answer
    x = 98,937.49

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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.