Home / 207,834.80-311,752.20-74,719.40

Finding the Fourth Proportional to 207,834.80, 311,752.20 and 74,719.40

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Solution

The fourth proportional to 207,834.80, 311,752.20 and 74,719.40 is: 112,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,834.80 : 311,752.20 = 74,719.40 : x
  2. Step 2: Convert to fraction form
    207,834.80/311,752.20 = 74,719.40/x
  3. Step 3: Cross multiply
    207,834.80x = 311,752.20 × 74,719.40
  4. Step 4: Simplify right side
    207,834.80x = 23,293,937,332.68
  5. Step 5: Solve for x
    x = 23,293,937,332.68/207,834.80
  6. Step 6: Final answer
    x = 112,079.10

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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.