Home / 156,531,412.92-215,964,908.76-90,427,791.96

Finding the Fourth Proportional to 156,531,412.92, 215,964,908.76 and 90,427,791.96

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Solution

The fourth proportional to 156,531,412.92, 215,964,908.76 and 90,427,791.96 is: 124,762,368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,531,412.92 : 215,964,908.76 = 90,427,791.96 : x
  2. Step 2: Convert to fraction form
    156,531,412.92/215,964,908.76 = 90,427,791.96/x
  3. Step 3: Cross multiply
    156,531,412.92x = 215,964,908.76 × 90,427,791.96
  4. Step 4: Simplify right side
    156,531,412.92x = 19,529,229,840,009,660
  5. Step 5: Solve for x
    x = 19,529,229,840,009,660/156,531,412.92
  6. Step 6: Final answer
    x = 124,762,368.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.