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Finding the Fourth Proportional to 101,909.61, 153,086.09 and 88,623.72

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Solution

The fourth proportional to 101,909.61, 153,086.09 and 88,623.72 is: 133,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,909.61 : 153,086.09 = 88,623.72 : x
  2. Step 2: Convert to fraction form
    101,909.61/153,086.09 = 88,623.72/x
  3. Step 3: Cross multiply
    101,909.61x = 153,086.09 × 88,623.72
  4. Step 4: Simplify right side
    101,909.61x = 13,567,058,332.94
  5. Step 5: Solve for x
    x = 13,567,058,332.94/101,909.61
  6. Step 6: Final answer
    x = 133,128.35

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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.