Home / 560,105.28-840,158.12-139,381.16

Finding the Fourth Proportional to 560,105.28, 840,158.12 and 139,381.16

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Solution

The fourth proportional to 560,105.28, 840,158.12 and 139,381.16 is: 209,071.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,105.28 : 840,158.12 = 139,381.16 : x
  2. Step 2: Convert to fraction form
    560,105.28/840,158.12 = 139,381.16/x
  3. Step 3: Cross multiply
    560,105.28x = 840,158.12 × 139,381.16
  4. Step 4: Simplify right side
    560,105.28x = 117,102,209,496.68
  5. Step 5: Solve for x
    x = 117,102,209,496.68/560,105.28
  6. Step 6: Final answer
    x = 209,071.78

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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.