Home / 118,207,321.20-177,310,981.80-72,857,689.20

Finding the Fourth Proportional to 118,207,321.20, 177,310,981.80 and 72,857,689.20

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Solution

The fourth proportional to 118,207,321.20, 177,310,981.80 and 72,857,689.20 is: 109,286,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,207,321.20 : 177,310,981.80 = 72,857,689.20 : x
  2. Step 2: Convert to fraction form
    118,207,321.20/177,310,981.80 = 72,857,689.20/x
  3. Step 3: Cross multiply
    118,207,321.20x = 177,310,981.80 × 72,857,689.20
  4. Step 4: Simplify right side
    118,207,321.20x = 12,918,468,403,731,258
  5. Step 5: Solve for x
    x = 12,918,468,403,731,258/118,207,321.20
  6. Step 6: Final answer
    x = 109,286,533.80

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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.