Home / 142,045.89-196,016.67-81,573.90

Finding the Fourth Proportional to 142,045.89, 196,016.67 and 81,573.90

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Solution

The fourth proportional to 142,045.89, 196,016.67 and 81,573.90 is: 112,568.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,045.89 : 196,016.67 = 81,573.90 : x
  2. Step 2: Convert to fraction form
    142,045.89/196,016.67 = 81,573.90/x
  3. Step 3: Cross multiply
    142,045.89x = 196,016.67 × 81,573.90
  4. Step 4: Simplify right side
    142,045.89x = 15,989,844,236.91
  5. Step 5: Solve for x
    x = 15,989,844,236.91/142,045.89
  6. Step 6: Final answer
    x = 112,568.16

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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.