Home / 121,335,861.60-182,003,792.40-80,521,192.80

Finding the Fourth Proportional to 121,335,861.60, 182,003,792.40 and 80,521,192.80

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Solution

The fourth proportional to 121,335,861.60, 182,003,792.40 and 80,521,192.80 is: 120,781,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,335,861.60 : 182,003,792.40 = 80,521,192.80 : x
  2. Step 2: Convert to fraction form
    121,335,861.60/182,003,792.40 = 80,521,192.80/x
  3. Step 3: Cross multiply
    121,335,861.60x = 182,003,792.40 × 80,521,192.80
  4. Step 4: Simplify right side
    121,335,861.60x = 14,655,162,458,171,574
  5. Step 5: Solve for x
    x = 14,655,162,458,171,574/121,335,861.60
  6. Step 6: Final answer
    x = 120,781,789.20

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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.