Home / 102,330.40-153,212.20-52,302.78

Finding the Fourth Proportional to 102,330.40, 153,212.20 and 52,302.78

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Solution

The fourth proportional to 102,330.40, 153,212.20 and 52,302.78 is: 78,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,330.40 : 153,212.20 = 52,302.78 : x
  2. Step 2: Convert to fraction form
    102,330.40/153,212.20 = 52,302.78/x
  3. Step 3: Cross multiply
    102,330.40x = 153,212.20 × 52,302.78
  4. Step 4: Simplify right side
    102,330.40x = 8,013,423,989.92
  5. Step 5: Solve for x
    x = 8,013,423,989.92/102,330.40
  6. Step 6: Final answer
    x = 78,309.32

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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.