Home / 130,815.76-180,560.25-77,136.52

Finding the Fourth Proportional to 130,815.76, 180,560.25 and 77,136.52

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Solution

The fourth proportional to 130,815.76, 180,560.25 and 77,136.52 is: 106,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,815.76 : 180,560.25 = 77,136.52 : x
  2. Step 2: Convert to fraction form
    130,815.76/180,560.25 = 77,136.52/x
  3. Step 3: Cross multiply
    130,815.76x = 180,560.25 × 77,136.52
  4. Step 4: Simplify right side
    130,815.76x = 13,927,789,335.33
  5. Step 5: Solve for x
    x = 13,927,789,335.33/130,815.76
  6. Step 6: Final answer
    x = 106,468.74

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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.