Home / 121,087.20-181,630.80-47,215.20

Finding the Fourth Proportional to 121,087.20, 181,630.80 and 47,215.20

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Solution

The fourth proportional to 121,087.20, 181,630.80 and 47,215.20 is: 70,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,087.20 : 181,630.80 = 47,215.20 : x
  2. Step 2: Convert to fraction form
    121,087.20/181,630.80 = 47,215.20/x
  3. Step 3: Cross multiply
    121,087.20x = 181,630.80 × 47,215.20
  4. Step 4: Simplify right side
    121,087.20x = 8,575,734,548.16
  5. Step 5: Solve for x
    x = 8,575,734,548.16/121,087.20
  6. Step 6: Final answer
    x = 70,822.80

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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.