Home / 207,848.20-312,002.70-129,051.40

Finding the Fourth Proportional to 207,848.20, 312,002.70 and 129,051.40

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Solution

The fourth proportional to 207,848.20, 312,002.70 and 129,051.40 is: 193,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,848.20 : 312,002.70 = 129,051.40 : x
  2. Step 2: Convert to fraction form
    207,848.20/312,002.70 = 129,051.40/x
  3. Step 3: Cross multiply
    207,848.20x = 312,002.70 × 129,051.40
  4. Step 4: Simplify right side
    207,848.20x = 40,264,385,238.78
  5. Step 5: Solve for x
    x = 40,264,385,238.78/207,848.20
  6. Step 6: Final answer
    x = 193,720.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.