Home / 82,668.20-124,002.30-53,143.70

Finding the Fourth Proportional to 82,668.20, 124,002.30 and 53,143.70

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Solution

The fourth proportional to 82,668.20, 124,002.30 and 53,143.70 is: 79,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,668.20 : 124,002.30 = 53,143.70 : x
  2. Step 2: Convert to fraction form
    82,668.20/124,002.30 = 53,143.70/x
  3. Step 3: Cross multiply
    82,668.20x = 124,002.30 × 53,143.70
  4. Step 4: Simplify right side
    82,668.20x = 6,589,941,030.51
  5. Step 5: Solve for x
    x = 6,589,941,030.51/82,668.20
  6. Step 6: Final answer
    x = 79,715.55

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1.5x scale

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.