Home / 138,881.28-191,658.03-77,625.03

Finding the Fourth Proportional to 138,881.28, 191,658.03 and 77,625.03

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Solution

The fourth proportional to 138,881.28, 191,658.03 and 77,625.03 is: 107,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,881.28 : 191,658.03 = 77,625.03 : x
  2. Step 2: Convert to fraction form
    138,881.28/191,658.03 = 77,625.03/x
  3. Step 3: Cross multiply
    138,881.28x = 191,658.03 × 77,625.03
  4. Step 4: Simplify right side
    138,881.28x = 14,877,460,328.49
  5. Step 5: Solve for x
    x = 14,877,460,328.49/138,881.28
  6. Step 6: Final answer
    x = 107,123.58

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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.