Home / 99,136.32-148,573.26-72,717.36

Finding the Fourth Proportional to 99,136.32, 148,573.26 and 72,717.36

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Solution

The fourth proportional to 99,136.32, 148,573.26 and 72,717.36 is: 108,979.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.32 : 148,573.26 = 72,717.36 : x
  2. Step 2: Convert to fraction form
    99,136.32/148,573.26 = 72,717.36/x
  3. Step 3: Cross multiply
    99,136.32x = 148,573.26 × 72,717.36
  4. Step 4: Simplify right side
    99,136.32x = 10,803,855,233.79
  5. Step 5: Solve for x
    x = 10,803,855,233.79/99,136.32
  6. Step 6: Final answer
    x = 108,979.79

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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.