Home / 130,860.20-180,587.94-74,272.52

Finding the Fourth Proportional to 130,860.20, 180,587.94 and 74,272.52

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Solution

The fourth proportional to 130,860.20, 180,587.94 and 74,272.52 is: 102,496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,860.20 : 180,587.94 = 74,272.52 : x
  2. Step 2: Convert to fraction form
    130,860.20/180,587.94 = 74,272.52/x
  3. Step 3: Cross multiply
    130,860.20x = 180,587.94 × 74,272.52
  4. Step 4: Simplify right side
    130,860.20x = 13,412,721,385.41
  5. Step 5: Solve for x
    x = 13,412,721,385.41/130,860.20
  6. Step 6: Final answer
    x = 102,496.57

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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.