Home / 130,909.45-180,761.57-106,714.21

Finding the Fourth Proportional to 130,909.45, 180,761.57 and 106,714.21

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Solution

The fourth proportional to 130,909.45, 180,761.57 and 106,714.21 is: 147,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,909.45 : 180,761.57 = 106,714.21 : x
  2. Step 2: Convert to fraction form
    130,909.45/180,761.57 = 106,714.21/x
  3. Step 3: Cross multiply
    130,909.45x = 180,761.57 × 106,714.21
  4. Step 4: Simplify right side
    130,909.45x = 19,289,828,140.91
  5. Step 5: Solve for x
    x = 19,289,828,140.91/130,909.45
  6. Step 6: Final answer
    x = 147,352.45

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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.