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Finding the Fourth Proportional to 207,987.72, 287,025.57 and 126,292.74

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Solution

The fourth proportional to 207,987.72, 287,025.57 and 126,292.74 is: 174,285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,987.72 : 287,025.57 = 126,292.74 : x
  2. Step 2: Convert to fraction form
    207,987.72/287,025.57 = 126,292.74/x
  3. Step 3: Cross multiply
    207,987.72x = 287,025.57 × 126,292.74
  4. Step 4: Simplify right side
    207,987.72x = 36,249,245,685.36
  5. Step 5: Solve for x
    x = 36,249,245,685.36/207,987.72
  6. Step 6: Final answer
    x = 174,285.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.