Home / 142,810.64-197,071.56-79,147.88

Finding the Fourth Proportional to 142,810.64, 197,071.56 and 79,147.88

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Solution

The fourth proportional to 142,810.64, 197,071.56 and 79,147.88 is: 109,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,810.64 : 197,071.56 = 79,147.88 : x
  2. Step 2: Convert to fraction form
    142,810.64/197,071.56 = 79,147.88/x
  3. Step 3: Cross multiply
    142,810.64x = 197,071.56 × 79,147.88
  4. Step 4: Simplify right side
    142,810.64x = 15,597,796,182.29
  5. Step 5: Solve for x
    x = 15,597,796,182.29/142,810.64
  6. Step 6: Final answer
    x = 109,220.13

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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.