Home / 120,945.40-181,472.10-42,116.20

Finding the Fourth Proportional to 120,945.40, 181,472.10 and 42,116.20

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Solution

The fourth proportional to 120,945.40, 181,472.10 and 42,116.20 is: 63,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,945.40 : 181,472.10 = 42,116.20 : x
  2. Step 2: Convert to fraction form
    120,945.40/181,472.10 = 42,116.20/x
  3. Step 3: Cross multiply
    120,945.40x = 181,472.10 × 42,116.20
  4. Step 4: Simplify right side
    120,945.40x = 7,642,915,258.02
  5. Step 5: Solve for x
    x = 7,642,915,258.02/120,945.40
  6. Step 6: Final answer
    x = 63,193.10

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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.