Home / 138,849.29-191,612.94-75,187.10

Finding the Fourth Proportional to 138,849.29, 191,612.94 and 75,187.10

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Solution

The fourth proportional to 138,849.29, 191,612.94 and 75,187.10 is: 103,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.29 : 191,612.94 = 75,187.10 : x
  2. Step 2: Convert to fraction form
    138,849.29/191,612.94 = 75,187.10/x
  3. Step 3: Cross multiply
    138,849.29x = 191,612.94 × 75,187.10
  4. Step 4: Simplify right side
    138,849.29x = 14,406,820,041.06
  5. Step 5: Solve for x
    x = 14,406,820,041.06/138,849.29
  6. Step 6: Final answer
    x = 103,758.69

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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.