Home / 130,473.30-180,050.11-76,761.78

Finding the Fourth Proportional to 130,473.30, 180,050.11 and 76,761.78

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Solution

The fourth proportional to 130,473.30, 180,050.11 and 76,761.78 is: 105,929.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,473.30 : 180,050.11 = 76,761.78 : x
  2. Step 2: Convert to fraction form
    130,473.30/180,050.11 = 76,761.78/x
  3. Step 3: Cross multiply
    130,473.30x = 180,050.11 × 76,761.78
  4. Step 4: Simplify right side
    130,473.30x = 13,820,966,065.70
  5. Step 5: Solve for x
    x = 13,820,966,065.70/130,473.30
  6. Step 6: Final answer
    x = 105,929.46

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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.