Home / 138,810.84-191,559.38-75,148.49

Finding the Fourth Proportional to 138,810.84, 191,559.38 and 75,148.49

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Solution

The fourth proportional to 138,810.84, 191,559.38 and 75,148.49 is: 103,705.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810.84 : 191,559.38 = 75,148.49 : x
  2. Step 2: Convert to fraction form
    138,810.84/191,559.38 = 75,148.49/x
  3. Step 3: Cross multiply
    138,810.84x = 191,559.38 × 75,148.49
  4. Step 4: Simplify right side
    138,810.84x = 14,395,396,818.80
  5. Step 5: Solve for x
    x = 14,395,396,818.80/138,810.84
  6. Step 6: Final answer
    x = 103,705.13

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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.