Home / 156,531,501.57-215,965,030.50-90,427,880.55

Finding the Fourth Proportional to 156,531,501.57, 215,965,030.50 and 90,427,880.55

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Solution

The fourth proportional to 156,531,501.57, 215,965,030.50 and 90,427,880.55 is: 124,762,490.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,531,501.57 : 215,965,030.50 = 90,427,880.55 : x
  2. Step 2: Convert to fraction form
    156,531,501.57/215,965,030.50 = 90,427,880.55/x
  3. Step 3: Cross multiply
    156,531,501.57x = 215,965,030.50 × 90,427,880.55
  4. Step 4: Simplify right side
    156,531,501.57x = 19,529,259,981,031,108
  5. Step 5: Solve for x
    x = 19,529,259,981,031,108/156,531,501.57
  6. Step 6: Final answer
    x = 124,762,490.52

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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.