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Finding the Fourth Proportional to 207,993.76, 287,032.20 and 112,501.12

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Solution

The fourth proportional to 207,993.76, 287,032.20 and 112,501.12 is: 155,251.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,993.76 : 287,032.20 = 112,501.12 : x
  2. Step 2: Convert to fraction form
    207,993.76/287,032.20 = 112,501.12/x
  3. Step 3: Cross multiply
    207,993.76x = 287,032.20 × 112,501.12
  4. Step 4: Simplify right side
    207,993.76x = 32,291,443,976.06
  5. Step 5: Solve for x
    x = 32,291,443,976.06/207,993.76
  6. Step 6: Final answer
    x = 155,251.98

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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.