Home / 128,304,800.10-192,457,200.15-77,160,492.90

Finding the Fourth Proportional to 128,304,800.10, 192,457,200.15 and 77,160,492.90

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Solution

The fourth proportional to 128,304,800.10, 192,457,200.15 and 77,160,492.90 is: 115,740,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,800.10 : 192,457,200.15 = 77,160,492.90 : x
  2. Step 2: Convert to fraction form
    128,304,800.10/192,457,200.15 = 77,160,492.90/x
  3. Step 3: Cross multiply
    128,304,800.10x = 192,457,200.15 × 77,160,492.90
  4. Step 4: Simplify right side
    128,304,800.10x = 14,850,092,425,727,956
  5. Step 5: Solve for x
    x = 14,850,092,425,727,956/128,304,800.10
  6. Step 6: Final answer
    x = 115,740,739.35

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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.