Home / 130,966.20-180,734.60-74,377.98

Finding the Fourth Proportional to 130,966.20, 180,734.60 and 74,377.98

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Solution

The fourth proportional to 130,966.20, 180,734.60 and 74,377.98 is: 102,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,966.20 : 180,734.60 = 74,377.98 : x
  2. Step 2: Convert to fraction form
    130,966.20/180,734.60 = 74,377.98/x
  3. Step 3: Cross multiply
    130,966.20x = 180,734.60 × 74,377.98
  4. Step 4: Simplify right side
    130,966.20x = 13,442,674,464.11
  5. Step 5: Solve for x
    x = 13,442,674,464.11/130,966.20
  6. Step 6: Final answer
    x = 102,642.32

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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.