Home / 120,040.80-165,702.96-107,443.68

Finding the Fourth Proportional to 120,040.80, 165,702.96 and 107,443.68

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Solution

The fourth proportional to 120,040.80, 165,702.96 and 107,443.68 is: 148,314.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,040.80 : 165,702.96 = 107,443.68 : x
  2. Step 2: Convert to fraction form
    120,040.80/165,702.96 = 107,443.68/x
  3. Step 3: Cross multiply
    120,040.80x = 165,702.96 × 107,443.68
  4. Step 4: Simplify right side
    120,040.80x = 17,803,735,809.29
  5. Step 5: Solve for x
    x = 17,803,735,809.29/120,040.80
  6. Step 6: Final answer
    x = 148,314.04

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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.