Home / 130,716.72-180,394.20-74,139.12

Finding the Fourth Proportional to 130,716.72, 180,394.20 and 74,139.12

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Solution

The fourth proportional to 130,716.72, 180,394.20 and 74,139.12 is: 102,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,716.72 : 180,394.20 = 74,139.12 : x
  2. Step 2: Convert to fraction form
    130,716.72/180,394.20 = 74,139.12/x
  3. Step 3: Cross multiply
    130,716.72x = 180,394.20 × 74,139.12
  4. Step 4: Simplify right side
    130,716.72x = 13,374,267,241.10
  5. Step 5: Solve for x
    x = 13,374,267,241.10/130,716.72
  6. Step 6: Final answer
    x = 102,314.89

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1.5x scale

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.