Home / 135,179.42-186,543.88-74,748.04

Finding the Fourth Proportional to 135,179.42, 186,543.88 and 74,748.04

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Solution

The fourth proportional to 135,179.42, 186,543.88 and 74,748.04 is: 103,150.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,179.42 : 186,543.88 = 74,748.04 : x
  2. Step 2: Convert to fraction form
    135,179.42/186,543.88 = 74,748.04/x
  3. Step 3: Cross multiply
    135,179.42x = 186,543.88 × 74,748.04
  4. Step 4: Simplify right side
    135,179.42x = 13,943,788,750.77
  5. Step 5: Solve for x
    x = 13,943,788,750.77/135,179.42
  6. Step 6: Final answer
    x = 103,150.24

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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.