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Finding the Fourth Proportional to 118,387.99, 163,373.58 and 64,671.96

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Solution

The fourth proportional to 118,387.99, 163,373.58 and 64,671.96 is: 89,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,387.99 : 163,373.58 = 64,671.96 : x
  2. Step 2: Convert to fraction form
    118,387.99/163,373.58 = 64,671.96/x
  3. Step 3: Cross multiply
    118,387.99x = 163,373.58 × 64,671.96
  4. Step 4: Simplify right side
    118,387.99x = 10,565,689,630.82
  5. Step 5: Solve for x
    x = 10,565,689,630.82/118,387.99
  6. Step 6: Final answer
    x = 89,246.30

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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.