Home / 118,419.12-163,416.32-64,702.80

Finding the Fourth Proportional to 118,419.12, 163,416.32 and 64,702.80

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Solution

The fourth proportional to 118,419.12, 163,416.32 and 64,702.80 is: 89,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,419.12 : 163,416.32 = 64,702.80 : x
  2. Step 2: Convert to fraction form
    118,419.12/163,416.32 = 64,702.80/x
  3. Step 3: Cross multiply
    118,419.12x = 163,416.32 × 64,702.80
  4. Step 4: Simplify right side
    118,419.12x = 10,573,493,469.70
  5. Step 5: Solve for x
    x = 10,573,493,469.70/118,419.12
  6. Step 6: Final answer
    x = 89,288.74

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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.