Home / 121,320.17-167,374.10-81,060.23

Finding the Fourth Proportional to 121,320.17, 167,374.10 and 81,060.23

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Solution

The fourth proportional to 121,320.17, 167,374.10 and 81,060.23 is: 111,831.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,320.17 : 167,374.10 = 81,060.23 : x
  2. Step 2: Convert to fraction form
    121,320.17/167,374.10 = 81,060.23/x
  3. Step 3: Cross multiply
    121,320.17x = 167,374.10 × 81,060.23
  4. Step 4: Simplify right side
    121,320.17x = 13,567,381,799.87
  5. Step 5: Solve for x
    x = 13,567,381,799.87/121,320.17
  6. Step 6: Final answer
    x = 111,831.22

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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.