Home / 99,136.74-136,862.02-76,425.96

Finding the Fourth Proportional to 99,136.74, 136,862.02 and 76,425.96

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Solution

The fourth proportional to 99,136.74, 136,862.02 and 76,425.96 is: 105,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.74 : 136,862.02 = 76,425.96 : x
  2. Step 2: Convert to fraction form
    99,136.74/136,862.02 = 76,425.96/x
  3. Step 3: Cross multiply
    99,136.74x = 136,862.02 × 76,425.96
  4. Step 4: Simplify right side
    99,136.74x = 10,459,811,266.04
  5. Step 5: Solve for x
    x = 10,459,811,266.04/99,136.74
  6. Step 6: Final answer
    x = 105,508.93

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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.