Home / 128,304,777.60-192,457,166.40-77,160,470.40

Finding the Fourth Proportional to 128,304,777.60, 192,457,166.40 and 77,160,470.40

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Solution

The fourth proportional to 128,304,777.60, 192,457,166.40 and 77,160,470.40 is: 115,740,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,777.60 : 192,457,166.40 = 77,160,470.40 : x
  2. Step 2: Convert to fraction form
    128,304,777.60/192,457,166.40 = 77,160,470.40/x
  3. Step 3: Cross multiply
    128,304,777.60x = 192,457,166.40 × 77,160,470.40
  4. Step 4: Simplify right side
    128,304,777.60x = 14,850,085,491,275,076
  5. Step 5: Solve for x
    x = 14,850,085,491,275,076/128,304,777.60
  6. Step 6: Final answer
    x = 115,740,705.60

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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.