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Finding the Fourth Proportional to 159,307.62, 219,795.03 and 90,385.68

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Solution

The fourth proportional to 159,307.62, 219,795.03 and 90,385.68 is: 124,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,307.62 : 219,795.03 = 90,385.68 : x
  2. Step 2: Convert to fraction form
    159,307.62/219,795.03 = 90,385.68/x
  3. Step 3: Cross multiply
    159,307.62x = 219,795.03 × 90,385.68
  4. Step 4: Simplify right side
    159,307.62x = 19,866,323,247.17
  5. Step 5: Solve for x
    x = 19,866,323,247.17/159,307.62
  6. Step 6: Final answer
    x = 124,704.16

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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.