Home / 120,025.30-165,681.57-107,428.18

Finding the Fourth Proportional to 120,025.30, 165,681.57 and 107,428.18

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Solution

The fourth proportional to 120,025.30, 165,681.57 and 107,428.18 is: 148,292.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,025.30 : 165,681.57 = 107,428.18 : x
  2. Step 2: Convert to fraction form
    120,025.30/165,681.57 = 107,428.18/x
  3. Step 3: Cross multiply
    120,025.30x = 165,681.57 × 107,428.18
  4. Step 4: Simplify right side
    120,025.30x = 17,798,869,524.64
  5. Step 5: Solve for x
    x = 17,798,869,524.64/120,025.30
  6. Step 6: Final answer
    x = 148,292.65

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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.