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Finding the Fourth Proportional to 118,475.20, 177,712.80 and 108,798.40

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Solution

The fourth proportional to 118,475.20, 177,712.80 and 108,798.40 is: 163,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,475.20 : 177,712.80 = 108,798.40 : x
  2. Step 2: Convert to fraction form
    118,475.20/177,712.80 = 108,798.40/x
  3. Step 3: Cross multiply
    118,475.20x = 177,712.80 × 108,798.40
  4. Step 4: Simplify right side
    118,475.20x = 19,334,868,299.52
  5. Step 5: Solve for x
    x = 19,334,868,299.52/118,475.20
  6. Step 6: Final answer
    x = 163,197.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.