Home / 127,811.94-176,381.19-74,128.80

Finding the Fourth Proportional to 127,811.94, 176,381.19 and 74,128.80

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Solution

The fourth proportional to 127,811.94, 176,381.19 and 74,128.80 is: 102,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,811.94 : 176,381.19 = 74,128.80 : x
  2. Step 2: Convert to fraction form
    127,811.94/176,381.19 = 74,128.80/x
  3. Step 3: Cross multiply
    127,811.94x = 176,381.19 × 74,128.80
  4. Step 4: Simplify right side
    127,811.94x = 13,074,925,957.27
  5. Step 5: Solve for x
    x = 13,074,925,957.27/127,811.94
  6. Step 6: Final answer
    x = 102,298.16

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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.