Home / 134,893.18-186,123.71-78,274.18

Finding the Fourth Proportional to 134,893.18, 186,123.71 and 78,274.18

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Solution

The fourth proportional to 134,893.18, 186,123.71 and 78,274.18 is: 108,001.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,893.18 : 186,123.71 = 78,274.18 : x
  2. Step 2: Convert to fraction form
    134,893.18/186,123.71 = 78,274.18/x
  3. Step 3: Cross multiply
    134,893.18x = 186,123.71 × 78,274.18
  4. Step 4: Simplify right side
    134,893.18x = 14,568,680,778.81
  5. Step 5: Solve for x
    x = 14,568,680,778.81/134,893.18
  6. Step 6: Final answer
    x = 108,001.61

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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.