Home / 130,733.12-180,405.12-74,149.76

Finding the Fourth Proportional to 130,733.12, 180,405.12 and 74,149.76

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Solution

The fourth proportional to 130,733.12, 180,405.12 and 74,149.76 is: 102,322.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,733.12 : 180,405.12 = 74,149.76 : x
  2. Step 2: Convert to fraction form
    130,733.12/180,405.12 = 74,149.76/x
  3. Step 3: Cross multiply
    130,733.12x = 180,405.12 × 74,149.76
  4. Step 4: Simplify right side
    130,733.12x = 13,376,996,350.77
  5. Step 5: Solve for x
    x = 13,376,996,350.77/130,733.12
  6. Step 6: Final answer
    x = 102,322.93

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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.