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Finding the Fourth Proportional to 99,279.55, 137,025.70 and 58,985.55

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Solution

The fourth proportional to 99,279.55, 137,025.70 and 58,985.55 is: 81,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,279.55 : 137,025.70 = 58,985.55 : x
  2. Step 2: Convert to fraction form
    99,279.55/137,025.70 = 58,985.55/x
  3. Step 3: Cross multiply
    99,279.55x = 137,025.70 × 58,985.55
  4. Step 4: Simplify right side
    99,279.55x = 8,082,536,278.64
  5. Step 5: Solve for x
    x = 8,082,536,278.64/99,279.55
  6. Step 6: Final answer
    x = 81,411.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.