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Finding the Fourth Proportional to 145,887.76, 218,209.56 and 89,589.52

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Solution

The fourth proportional to 145,887.76, 218,209.56 and 89,589.52 is: 134,002.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,887.76 : 218,209.56 = 89,589.52 : x
  2. Step 2: Convert to fraction form
    145,887.76/218,209.56 = 89,589.52/x
  3. Step 3: Cross multiply
    145,887.76x = 218,209.56 × 89,589.52
  4. Step 4: Simplify right side
    145,887.76x = 19,549,289,739.81
  5. Step 5: Solve for x
    x = 19,549,289,739.81/145,887.76
  6. Step 6: Final answer
    x = 134,002.26

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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.