Home / 100,348.40-138,428.09-60,050.19

Finding the Fourth Proportional to 100,348.40, 138,428.09 and 60,050.19

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Solution

The fourth proportional to 100,348.40, 138,428.09 and 60,050.19 is: 82,837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,348.40 : 138,428.09 = 60,050.19 : x
  2. Step 2: Convert to fraction form
    100,348.40/138,428.09 = 60,050.19/x
  3. Step 3: Cross multiply
    100,348.40x = 138,428.09 × 60,050.19
  4. Step 4: Simplify right side
    100,348.40x = 8,312,633,549.88
  5. Step 5: Solve for x
    x = 8,312,633,549.88/100,348.40
  6. Step 6: Final answer
    x = 82,837.73

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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.