Home / 120,028.15-180,069.02-45,148.92

Finding the Fourth Proportional to 120,028.15, 180,069.02 and 45,148.92

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Solution

The fourth proportional to 120,028.15, 180,069.02 and 45,148.92 is: 67,733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,028.15 : 180,069.02 = 45,148.92 : x
  2. Step 2: Convert to fraction form
    120,028.15/180,069.02 = 45,148.92/x
  3. Step 3: Cross multiply
    120,028.15x = 180,069.02 × 45,148.92
  4. Step 4: Simplify right side
    120,028.15x = 8,129,920,877.46
  5. Step 5: Solve for x
    x = 8,129,920,877.46/120,028.15
  6. Step 6: Final answer
    x = 67,733.45

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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.