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Finding the Fourth Proportional to 118,814.17, 163,963.53 and 71,078.74

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Solution

The fourth proportional to 118,814.17, 163,963.53 and 71,078.74 is: 98,088.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,814.17 : 163,963.53 = 71,078.74 : x
  2. Step 2: Convert to fraction form
    118,814.17/163,963.53 = 71,078.74/x
  3. Step 3: Cross multiply
    118,814.17x = 163,963.53 × 71,078.74
  4. Step 4: Simplify right side
    118,814.17x = 11,654,321,118.35
  5. Step 5: Solve for x
    x = 11,654,321,118.35/118,814.17
  6. Step 6: Final answer
    x = 98,088.65

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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.