Home / 120,027.80-165,685.02-107,430.68

Finding the Fourth Proportional to 120,027.80, 165,685.02 and 107,430.68

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Solution

The fourth proportional to 120,027.80, 165,685.02 and 107,430.68 is: 148,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,027.80 : 165,685.02 = 107,430.68 : x
  2. Step 2: Convert to fraction form
    120,027.80/165,685.02 = 107,430.68/x
  3. Step 3: Cross multiply
    120,027.80x = 165,685.02 × 107,430.68
  4. Step 4: Simplify right side
    120,027.80x = 17,799,654,364.41
  5. Step 5: Solve for x
    x = 17,799,654,364.41/120,027.80
  6. Step 6: Final answer
    x = 148,296.10

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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.