Home / 123,001.18-169,384.20-106,861.12

Finding the Fourth Proportional to 123,001.18, 169,384.20 and 106,861.12

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Solution

The fourth proportional to 123,001.18, 169,384.20 and 106,861.12 is: 147,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,001.18 : 169,384.20 = 106,861.12 : x
  2. Step 2: Convert to fraction form
    123,001.18/169,384.20 = 106,861.12/x
  3. Step 3: Cross multiply
    123,001.18x = 169,384.20 × 106,861.12
  4. Step 4: Simplify right side
    123,001.18x = 18,100,585,322.30
  5. Step 5: Solve for x
    x = 18,100,585,322.30/123,001.18
  6. Step 6: Final answer
    x = 147,157.82

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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.