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Finding the Fourth Proportional to 118,143.81, 163,042.55 and 67,158.68

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Solution

The fourth proportional to 118,143.81, 163,042.55 and 67,158.68 is: 92,681.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,143.81 : 163,042.55 = 67,158.68 : x
  2. Step 2: Convert to fraction form
    118,143.81/163,042.55 = 67,158.68/x
  3. Step 3: Cross multiply
    118,143.81x = 163,042.55 × 67,158.68
  4. Step 4: Simplify right side
    118,143.81x = 10,949,721,290.83
  5. Step 5: Solve for x
    x = 10,949,721,290.83/118,143.81
  6. Step 6: Final answer
    x = 92,681.29

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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.