Home / 138,918.93-191,708.22-75,256.98

Finding the Fourth Proportional to 138,918.93, 191,708.22 and 75,256.98

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Solution

The fourth proportional to 138,918.93, 191,708.22 and 75,256.98 is: 103,854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.93 : 191,708.22 = 75,256.98 : x
  2. Step 2: Convert to fraction form
    138,918.93/191,708.22 = 75,256.98/x
  3. Step 3: Cross multiply
    138,918.93x = 191,708.22 × 75,256.98
  4. Step 4: Simplify right side
    138,918.93x = 14,427,381,678.38
  5. Step 5: Solve for x
    x = 14,427,381,678.38/138,918.93
  6. Step 6: Final answer
    x = 103,854.68

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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.