Home / 130,735.20-180,390.56-87,777.04

Finding the Fourth Proportional to 130,735.20, 180,390.56 and 87,777.04

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Solution

The fourth proportional to 130,735.20, 180,390.56 and 87,777.04 is: 121,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,735.20 : 180,390.56 = 87,777.04 : x
  2. Step 2: Convert to fraction form
    130,735.20/180,390.56 = 87,777.04/x
  3. Step 3: Cross multiply
    130,735.20x = 180,390.56 × 87,777.04
  4. Step 4: Simplify right side
    130,735.20x = 15,834,149,400.74
  5. Step 5: Solve for x
    x = 15,834,149,400.74/130,735.20
  6. Step 6: Final answer
    x = 121,116.19

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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.