Home / 138,686.91-191,389.30-75,026.07

Finding the Fourth Proportional to 138,686.91, 191,389.30 and 75,026.07

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Solution

The fourth proportional to 138,686.91, 191,389.30 and 75,026.07 is: 103,536.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,686.91 : 191,389.30 = 75,026.07 : x
  2. Step 2: Convert to fraction form
    138,686.91/191,389.30 = 75,026.07/x
  3. Step 3: Cross multiply
    138,686.91x = 191,389.30 × 75,026.07
  4. Step 4: Simplify right side
    138,686.91x = 14,359,186,831.49
  5. Step 5: Solve for x
    x = 14,359,186,831.49/138,686.91
  6. Step 6: Final answer
    x = 103,536.72

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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.