Home / 103,818.60-155,598.30-76,084.20

Finding the Fourth Proportional to 103,818.60, 155,598.30 and 76,084.20

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Solution

The fourth proportional to 103,818.60, 155,598.30 and 76,084.20 is: 114,031.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,818.60 : 155,598.30 = 76,084.20 : x
  2. Step 2: Convert to fraction form
    103,818.60/155,598.30 = 76,084.20/x
  3. Step 3: Cross multiply
    103,818.60x = 155,598.30 × 76,084.20
  4. Step 4: Simplify right side
    103,818.60x = 11,838,572,176.86
  5. Step 5: Solve for x
    x = 11,838,572,176.86/103,818.60
  6. Step 6: Final answer
    x = 114,031.32

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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.