Home / 129,276,993.40-193,915,490.10-80,904,052.60

Finding the Fourth Proportional to 129,276,993.40, 193,915,490.10 and 80,904,052.60

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Solution

The fourth proportional to 129,276,993.40, 193,915,490.10 and 80,904,052.60 is: 121,356,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,276,993.40 : 193,915,490.10 = 80,904,052.60 : x
  2. Step 2: Convert to fraction form
    129,276,993.40/193,915,490.10 = 80,904,052.60/x
  3. Step 3: Cross multiply
    129,276,993.40x = 193,915,490.10 × 80,904,052.60
  4. Step 4: Simplify right side
    129,276,993.40x = 15,688,549,011,005,178
  5. Step 5: Solve for x
    x = 15,688,549,011,005,178/129,276,993.40
  6. Step 6: Final answer
    x = 121,356,078.90

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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.