Home / 121,113.10-181,777.65-71,130.70

Finding the Fourth Proportional to 121,113.10, 181,777.65 and 71,130.70

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Solution

The fourth proportional to 121,113.10, 181,777.65 and 71,130.70 is: 106,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,113.10 : 181,777.65 = 71,130.70 : x
  2. Step 2: Convert to fraction form
    121,113.10/181,777.65 = 71,130.70/x
  3. Step 3: Cross multiply
    121,113.10x = 181,777.65 × 71,130.70
  4. Step 4: Simplify right side
    121,113.10x = 12,929,971,488.86
  5. Step 5: Solve for x
    x = 12,929,971,488.86/121,113.10
  6. Step 6: Final answer
    x = 106,759.48

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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.