Home / 121,143,649.20-181,715,473.80-72,770,708.40

Finding the Fourth Proportional to 121,143,649.20, 181,715,473.80 and 72,770,708.40

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Solution

The fourth proportional to 121,143,649.20, 181,715,473.80 and 72,770,708.40 is: 109,156,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143,649.20 : 181,715,473.80 = 72,770,708.40 : x
  2. Step 2: Convert to fraction form
    121,143,649.20/181,715,473.80 = 72,770,708.40/x
  3. Step 3: Cross multiply
    121,143,649.20x = 181,715,473.80 × 72,770,708.40
  4. Step 4: Simplify right side
    121,143,649.20x = 13,223,563,755,667,642
  5. Step 5: Solve for x
    x = 13,223,563,755,667,642/121,143,649.20
  6. Step 6: Final answer
    x = 109,156,062.60

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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.