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Finding the Fourth Proportional to 136,389.99, 188,210.87 and 75,134.17

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Solution

The fourth proportional to 136,389.99, 188,210.87 and 75,134.17 is: 103,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,389.99 : 188,210.87 = 75,134.17 : x
  2. Step 2: Convert to fraction form
    136,389.99/188,210.87 = 75,134.17/x
  3. Step 3: Cross multiply
    136,389.99x = 188,210.87 × 75,134.17
  4. Step 4: Simplify right side
    136,389.99x = 14,141,067,167.79
  5. Step 5: Solve for x
    x = 14,141,067,167.79/136,389.99
  6. Step 6: Final answer
    x = 103,681.12

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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.