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Finding the Fourth Proportional to 160,658.93, 240,757.53 and 90,389.81

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Solution

The fourth proportional to 160,658.93, 240,757.53 and 90,389.81 is: 135,454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,658.93 : 240,757.53 = 90,389.81 : x
  2. Step 2: Convert to fraction form
    160,658.93/240,757.53 = 90,389.81/x
  3. Step 3: Cross multiply
    160,658.93x = 240,757.53 × 90,389.81
  4. Step 4: Simplify right side
    160,658.93x = 21,762,026,188.98
  5. Step 5: Solve for x
    x = 21,762,026,188.98/160,658.93
  6. Step 6: Final answer
    x = 135,454.82

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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.