Home / 138,619.61-191,296.21-76,532.10

Finding the Fourth Proportional to 138,619.61, 191,296.21 and 76,532.10

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Solution

The fourth proportional to 138,619.61, 191,296.21 and 76,532.10 is: 105,614.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,619.61 : 191,296.21 = 76,532.10 : x
  2. Step 2: Convert to fraction form
    138,619.61/191,296.21 = 76,532.10/x
  3. Step 3: Cross multiply
    138,619.61x = 191,296.21 × 76,532.10
  4. Step 4: Simplify right side
    138,619.61x = 14,640,300,769.01
  5. Step 5: Solve for x
    x = 14,640,300,769.01/138,619.61
  6. Step 6: Final answer
    x = 105,614.93

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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.