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Finding the Fourth Proportional to 160,658.55, 240,756.98 and 90,389.43

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Solution

The fourth proportional to 160,658.55, 240,756.98 and 90,389.43 is: 135,454.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,658.55 : 240,756.98 = 90,389.43 : x
  2. Step 2: Convert to fraction form
    160,658.55/240,756.98 = 90,389.43/x
  3. Step 3: Cross multiply
    160,658.55x = 240,756.98 × 90,389.43
  4. Step 4: Simplify right side
    160,658.55x = 21,761,885,738.77
  5. Step 5: Solve for x
    x = 21,761,885,738.77/160,658.55
  6. Step 6: Final answer
    x = 135,454.26

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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.