Home / 138,803.04-191,548.16-75,140.79

Finding the Fourth Proportional to 138,803.04, 191,548.16 and 75,140.79

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Solution

The fourth proportional to 138,803.04, 191,548.16 and 75,140.79 is: 103,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,803.04 : 191,548.16 = 75,140.79 : x
  2. Step 2: Convert to fraction form
    138,803.04/191,548.16 = 75,140.79/x
  3. Step 3: Cross multiply
    138,803.04x = 191,548.16 × 75,140.79
  4. Step 4: Simplify right side
    138,803.04x = 14,393,079,689.74
  5. Step 5: Solve for x
    x = 14,393,079,689.74/138,803.04
  6. Step 6: Final answer
    x = 103,694.27

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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.