Home / 124,726.89-172,122.80-68,138.67

Finding the Fourth Proportional to 124,726.89, 172,122.80 and 68,138.67

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Solution

The fourth proportional to 124,726.89, 172,122.80 and 68,138.67 is: 94,031.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,726.89 : 172,122.80 = 68,138.67 : x
  2. Step 2: Convert to fraction form
    124,726.89/172,122.80 = 68,138.67/x
  3. Step 3: Cross multiply
    124,726.89x = 172,122.80 × 68,138.67
  4. Step 4: Simplify right side
    124,726.89x = 11,728,218,327.98
  5. Step 5: Solve for x
    x = 11,728,218,327.98/124,726.89
  6. Step 6: Final answer
    x = 94,031.19

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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.