Home / 137,136.52-189,247.04-76,706.47

Finding the Fourth Proportional to 137,136.52, 189,247.04 and 76,706.47

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Solution

The fourth proportional to 137,136.52, 189,247.04 and 76,706.47 is: 105,854.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,136.52 : 189,247.04 = 76,706.47 : x
  2. Step 2: Convert to fraction form
    137,136.52/189,247.04 = 76,706.47/x
  3. Step 3: Cross multiply
    137,136.52x = 189,247.04 × 76,706.47
  4. Step 4: Simplify right side
    137,136.52x = 14,516,471,539.70
  5. Step 5: Solve for x
    x = 14,516,471,539.70/137,136.52
  6. Step 6: Final answer
    x = 105,854.16

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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.