Home / 129,870.38-194,825.04-45,615.68

Finding the Fourth Proportional to 129,870.38, 194,825.04 and 45,615.68

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Solution

The fourth proportional to 129,870.38, 194,825.04 and 45,615.68 is: 68,430.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,870.38 : 194,825.04 = 45,615.68 : x
  2. Step 2: Convert to fraction form
    129,870.38/194,825.04 = 45,615.68/x
  3. Step 3: Cross multiply
    129,870.38x = 194,825.04 × 45,615.68
  4. Step 4: Simplify right side
    129,870.38x = 8,887,076,680.63
  5. Step 5: Solve for x
    x = 8,887,076,680.63/129,870.38
  6. Step 6: Final answer
    x = 68,430.36

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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.