Home / 142,052.13-196,026.21-78,389.10

Finding the Fourth Proportional to 142,052.13, 196,026.21 and 78,389.10

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Solution

The fourth proportional to 142,052.13, 196,026.21 and 78,389.10 is: 108,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,052.13 : 196,026.21 = 78,389.10 : x
  2. Step 2: Convert to fraction form
    142,052.13/196,026.21 = 78,389.10/x
  3. Step 3: Cross multiply
    142,052.13x = 196,026.21 × 78,389.10
  4. Step 4: Simplify right side
    142,052.13x = 15,366,318,178.31
  5. Step 5: Solve for x
    x = 15,366,318,178.31/142,052.13
  6. Step 6: Final answer
    x = 108,173.80

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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.