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Finding the Fourth Proportional to 99,280.89, 137,008.67 and 53,958.87

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Solution

The fourth proportional to 99,280.89, 137,008.67 and 53,958.87 is: 74,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,280.89 : 137,008.67 = 53,958.87 : x
  2. Step 2: Convert to fraction form
    99,280.89/137,008.67 = 53,958.87/x
  3. Step 3: Cross multiply
    99,280.89x = 137,008.67 × 53,958.87
  4. Step 4: Simplify right side
    99,280.89x = 7,392,832,328.36
  5. Step 5: Solve for x
    x = 7,392,832,328.36/99,280.89
  6. Step 6: Final answer
    x = 74,463.80

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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.