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Finding the Fourth Proportional to 147,812.50, 203,981.49 and 84,150.30

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Solution

The fourth proportional to 147,812.50, 203,981.49 and 84,150.30 is: 116,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,812.50 : 203,981.49 = 84,150.30 : x
  2. Step 2: Convert to fraction form
    147,812.50/203,981.49 = 84,150.30/x
  3. Step 3: Cross multiply
    147,812.50x = 203,981.49 × 84,150.30
  4. Step 4: Simplify right side
    147,812.50x = 17,165,103,577.95
  5. Step 5: Solve for x
    x = 17,165,103,577.95/147,812.50
  6. Step 6: Final answer
    x = 116,127.55

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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.