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Finding the Fourth Proportional to 103,423.30, 155,134.95 and 92,925.70

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Solution

The fourth proportional to 103,423.30, 155,134.95 and 92,925.70 is: 139,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,423.30 : 155,134.95 = 92,925.70 : x
  2. Step 2: Convert to fraction form
    103,423.30/155,134.95 = 92,925.70/x
  3. Step 3: Cross multiply
    103,423.30x = 155,134.95 × 92,925.70
  4. Step 4: Simplify right side
    103,423.30x = 14,416,023,823.22
  5. Step 5: Solve for x
    x = 14,416,023,823.22/103,423.30
  6. Step 6: Final answer
    x = 139,388.55

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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.