Home / 120,632.20-180,948.30-83,307.40

Finding the Fourth Proportional to 120,632.20, 180,948.30 and 83,307.40

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Solution

The fourth proportional to 120,632.20, 180,948.30 and 83,307.40 is: 124,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,632.20 : 180,948.30 = 83,307.40 : x
  2. Step 2: Convert to fraction form
    120,632.20/180,948.30 = 83,307.40/x
  3. Step 3: Cross multiply
    120,632.20x = 180,948.30 × 83,307.40
  4. Step 4: Simplify right side
    120,632.20x = 15,074,332,407.42
  5. Step 5: Solve for x
    x = 15,074,332,407.42/120,632.20
  6. Step 6: Final answer
    x = 124,961.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.