Home / 208,276.17-312,349.61-75,139.08

Finding the Fourth Proportional to 208,276.17, 312,349.61 and 75,139.08

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Solution

The fourth proportional to 208,276.17, 312,349.61 and 75,139.08 is: 112,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,276.17 : 312,349.61 = 75,139.08 : x
  2. Step 2: Convert to fraction form
    208,276.17/312,349.61 = 75,139.08/x
  3. Step 3: Cross multiply
    208,276.17x = 312,349.61 × 75,139.08
  4. Step 4: Simplify right side
    208,276.17x = 23,469,662,333.76
  5. Step 5: Solve for x
    x = 23,469,662,333.76/208,276.17
  6. Step 6: Final answer
    x = 112,685.30

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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.