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Finding the Fourth Proportional to 118,730.80, 163,848.59 and 65,015.85

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Solution

The fourth proportional to 118,730.80, 163,848.59 and 65,015.85 is: 89,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,730.80 : 163,848.59 = 65,015.85 : x
  2. Step 2: Convert to fraction form
    118,730.80/163,848.59 = 65,015.85/x
  3. Step 3: Cross multiply
    118,730.80x = 163,848.59 × 65,015.85
  4. Step 4: Simplify right side
    118,730.80x = 10,652,755,350.15
  5. Step 5: Solve for x
    x = 10,652,755,350.15/118,730.80
  6. Step 6: Final answer
    x = 89,721.92

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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.