Home / 121,587.89-167,635.27-99,703.56

Finding the Fourth Proportional to 121,587.89, 167,635.27 and 99,703.56

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Solution

The fourth proportional to 121,587.89, 167,635.27 and 99,703.56 is: 137,462.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,587.89 : 167,635.27 = 99,703.56 : x
  2. Step 2: Convert to fraction form
    121,587.89/167,635.27 = 99,703.56/x
  3. Step 3: Cross multiply
    121,587.89x = 167,635.27 × 99,703.56
  4. Step 4: Simplify right side
    121,587.89x = 16,713,833,010.87
  5. Step 5: Solve for x
    x = 16,713,833,010.87/121,587.89
  6. Step 6: Final answer
    x = 137,462.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.