Home / 189,168.21-261,044.02-103,125.10

Finding the Fourth Proportional to 189,168.21, 261,044.02 and 103,125.10

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Solution

The fourth proportional to 189,168.21, 261,044.02 and 103,125.10 is: 142,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,168.21 : 261,044.02 = 103,125.10 : x
  2. Step 2: Convert to fraction form
    189,168.21/261,044.02 = 103,125.10/x
  3. Step 3: Cross multiply
    189,168.21x = 261,044.02 × 103,125.10
  4. Step 4: Simplify right side
    189,168.21x = 26,920,190,052.58
  5. Step 5: Solve for x
    x = 26,920,190,052.58/189,168.21
  6. Step 6: Final answer
    x = 142,308.21

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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.