Home / 117,831.80-162,618.72-66,861.20

Finding the Fourth Proportional to 117,831.80, 162,618.72 and 66,861.20

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Solution

The fourth proportional to 117,831.80, 162,618.72 and 66,861.20 is: 92,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,831.80 : 162,618.72 = 66,861.20 : x
  2. Step 2: Convert to fraction form
    117,831.80/162,618.72 = 66,861.20/x
  3. Step 3: Cross multiply
    117,831.80x = 162,618.72 × 66,861.20
  4. Step 4: Simplify right side
    117,831.80x = 10,872,882,761.66
  5. Step 5: Solve for x
    x = 10,872,882,761.66/117,831.80
  6. Step 6: Final answer
    x = 92,274.60

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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.