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Finding the Fourth Proportional to 153,393.60, 211,641.84 and 89,747.04

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Solution

The fourth proportional to 153,393.60, 211,641.84 and 89,747.04 is: 123,826.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,393.60 : 211,641.84 = 89,747.04 : x
  2. Step 2: Convert to fraction form
    153,393.60/211,641.84 = 89,747.04/x
  3. Step 3: Cross multiply
    153,393.60x = 211,641.84 × 89,747.04
  4. Step 4: Simplify right side
    153,393.60x = 18,994,228,680.15
  5. Step 5: Solve for x
    x = 18,994,228,680.15/153,393.60
  6. Step 6: Final answer
    x = 123,826.74

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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.