Home / 142,652.09-196,857.48-78,988.52

Finding the Fourth Proportional to 142,652.09, 196,857.48 and 78,988.52

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Solution

The fourth proportional to 142,652.09, 196,857.48 and 78,988.52 is: 109,002.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,652.09 : 196,857.48 = 78,988.52 : x
  2. Step 2: Convert to fraction form
    142,652.09/196,857.48 = 78,988.52/x
  3. Step 3: Cross multiply
    142,652.09x = 196,857.48 × 78,988.52
  4. Step 4: Simplify right side
    142,652.09x = 15,549,480,996.13
  5. Step 5: Solve for x
    x = 15,549,480,996.13/142,652.09
  6. Step 6: Final answer
    x = 109,002.83

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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.