Home / 156,410,396.79-215,851,302.39-90,329,694.27

Finding the Fourth Proportional to 156,410,396.79, 215,851,302.39 and 90,329,694.27

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Solution

The fourth proportional to 156,410,396.79, 215,851,302.39 and 90,329,694.27 is: 124,657,839.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,410,396.79 : 215,851,302.39 = 90,329,694.27 : x
  2. Step 2: Convert to fraction form
    156,410,396.79/215,851,302.39 = 90,329,694.27/x
  3. Step 3: Cross multiply
    156,410,396.79x = 215,851,302.39 × 90,329,694.27
  4. Step 4: Simplify right side
    156,410,396.79x = 19,497,782,152,670,020
  5. Step 5: Solve for x
    x = 19,497,782,152,670,020/156,410,396.79
  6. Step 6: Final answer
    x = 124,657,839.59

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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.