Home / 120,953,243.20-181,429,864.80-80,138,574.40

Finding the Fourth Proportional to 120,953,243.20, 181,429,864.80 and 80,138,574.40

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Solution

The fourth proportional to 120,953,243.20, 181,429,864.80 and 80,138,574.40 is: 120,207,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,953,243.20 : 181,429,864.80 = 80,138,574.40 : x
  2. Step 2: Convert to fraction form
    120,953,243.20/181,429,864.80 = 80,138,574.40/x
  3. Step 3: Cross multiply
    120,953,243.20x = 181,429,864.80 × 80,138,574.40
  4. Step 4: Simplify right side
    120,953,243.20x = 14,539,530,718,656,744
  5. Step 5: Solve for x
    x = 14,539,530,718,656,744/120,953,243.20
  6. Step 6: Final answer
    x = 120,207,861.60

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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.