Home / 103,188.84-142,402.23-57,876.90

Finding the Fourth Proportional to 103,188.84, 142,402.23 and 57,876.90

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Solution

The fourth proportional to 103,188.84, 142,402.23 and 57,876.90 is: 79,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,188.84 : 142,402.23 = 57,876.90 : x
  2. Step 2: Convert to fraction form
    103,188.84/142,402.23 = 57,876.90/x
  3. Step 3: Cross multiply
    103,188.84x = 142,402.23 × 57,876.90
  4. Step 4: Simplify right side
    103,188.84x = 8,241,799,625.49
  5. Step 5: Solve for x
    x = 8,241,799,625.49/103,188.84
  6. Step 6: Final answer
    x = 79,871.04

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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.