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Finding the Fourth Proportional to 153,171.56, 211,155.17 and 101,401.92

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Solution

The fourth proportional to 153,171.56, 211,155.17 and 101,401.92 is: 139,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,171.56 : 211,155.17 = 101,401.92 : x
  2. Step 2: Convert to fraction form
    153,171.56/211,155.17 = 101,401.92/x
  3. Step 3: Cross multiply
    153,171.56x = 211,155.17 × 101,401.92
  4. Step 4: Simplify right side
    153,171.56x = 21,411,539,148.92
  5. Step 5: Solve for x
    x = 21,411,539,148.92/153,171.56
  6. Step 6: Final answer
    x = 139,787.95

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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.