Home / 102,139.97-153,353.48-52,255.85

Finding the Fourth Proportional to 102,139.97, 153,353.48 and 52,255.85

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Solution

The fourth proportional to 102,139.97, 153,353.48 and 52,255.85 is: 78,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,139.97 : 153,353.48 = 52,255.85 : x
  2. Step 2: Convert to fraction form
    102,139.97/153,353.48 = 52,255.85/x
  3. Step 3: Cross multiply
    102,139.97x = 153,353.48 × 52,255.85
  4. Step 4: Simplify right side
    102,139.97x = 8,013,615,419.81
  5. Step 5: Solve for x
    x = 8,013,615,419.81/102,139.97
  6. Step 6: Final answer
    x = 78,457.20

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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.