Home / 121,247.20-181,870.80-54,762.40

Finding the Fourth Proportional to 121,247.20, 181,870.80 and 54,762.40

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Solution

The fourth proportional to 121,247.20, 181,870.80 and 54,762.40 is: 82,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,247.20 : 181,870.80 = 54,762.40 : x
  2. Step 2: Convert to fraction form
    121,247.20/181,870.80 = 54,762.40/x
  3. Step 3: Cross multiply
    121,247.20x = 181,870.80 × 54,762.40
  4. Step 4: Simplify right side
    121,247.20x = 9,959,681,497.92
  5. Step 5: Solve for x
    x = 9,959,681,497.92/121,247.20
  6. Step 6: Final answer
    x = 82,143.60

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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.