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Finding the Fourth Proportional to 118,678.15, 163,735.32 and 67,654.11

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Solution

The fourth proportional to 118,678.15, 163,735.32 and 67,654.11 is: 93,339.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,678.15 : 163,735.32 = 67,654.11 : x
  2. Step 2: Convert to fraction form
    118,678.15/163,735.32 = 67,654.11/x
  3. Step 3: Cross multiply
    118,678.15x = 163,735.32 × 67,654.11
  4. Step 4: Simplify right side
    118,678.15x = 11,077,367,350.17
  5. Step 5: Solve for x
    x = 11,077,367,350.17/118,678.15
  6. Step 6: Final answer
    x = 93,339.57

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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.