Home / 142,160.70-196,193.28-81,750.96

Finding the Fourth Proportional to 142,160.70, 196,193.28 and 81,750.96

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Solution

The fourth proportional to 142,160.70, 196,193.28 and 81,750.96 is: 112,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,160.70 : 196,193.28 = 81,750.96 : x
  2. Step 2: Convert to fraction form
    142,160.70/196,193.28 = 81,750.96/x
  3. Step 3: Cross multiply
    142,160.70x = 196,193.28 × 81,750.96
  4. Step 4: Simplify right side
    142,160.70x = 16,038,988,985.55
  5. Step 5: Solve for x
    x = 16,038,988,985.55/142,160.70
  6. Step 6: Final answer
    x = 112,822.95

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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.