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Finding the Fourth Proportional to 118,613.76, 163,691.88 and 64,903.48

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Solution

The fourth proportional to 118,613.76, 163,691.88 and 64,903.48 is: 89,569.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,613.76 : 163,691.88 = 64,903.48 : x
  2. Step 2: Convert to fraction form
    118,613.76/163,691.88 = 64,903.48/x
  3. Step 3: Cross multiply
    118,613.76x = 163,691.88 × 64,903.48
  4. Step 4: Simplify right side
    118,613.76x = 10,624,172,659.74
  5. Step 5: Solve for x
    x = 10,624,172,659.74/118,613.76
  6. Step 6: Final answer
    x = 89,569.48

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1.5x scale

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.