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Finding the Fourth Proportional to 116,574.20, 174,947.70 and 85,470.20

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Solution

The fourth proportional to 116,574.20, 174,947.70 and 85,470.20 is: 128,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,574.20 : 174,947.70 = 85,470.20 : x
  2. Step 2: Convert to fraction form
    116,574.20/174,947.70 = 85,470.20/x
  3. Step 3: Cross multiply
    116,574.20x = 174,947.70 × 85,470.20
  4. Step 4: Simplify right side
    116,574.20x = 14,952,814,908.54
  5. Step 5: Solve for x
    x = 14,952,814,908.54/116,574.20
  6. Step 6: Final answer
    x = 128,268.65

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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.