Home / 142,812.48-197,080.81-79,150.28

Finding the Fourth Proportional to 142,812.48, 197,080.81 and 79,150.28

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Solution

The fourth proportional to 142,812.48, 197,080.81 and 79,150.28 is: 109,227.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,812.48 : 197,080.81 = 79,150.28 : x
  2. Step 2: Convert to fraction form
    142,812.48/197,080.81 = 79,150.28/x
  3. Step 3: Cross multiply
    142,812.48x = 197,080.81 × 79,150.28
  4. Step 4: Simplify right side
    142,812.48x = 15,599,001,294.13
  5. Step 5: Solve for x
    x = 15,599,001,294.13/142,812.48
  6. Step 6: Final answer
    x = 109,227.16

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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.