Home / 207,989.11-287,025.06-112,495.78

Finding the Fourth Proportional to 207,989.11, 287,025.06 and 112,495.78

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Solution

The fourth proportional to 207,989.11, 287,025.06 and 112,495.78 is: 155,244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,989.11 : 287,025.06 = 112,495.78 : x
  2. Step 2: Convert to fraction form
    207,989.11/287,025.06 = 112,495.78/x
  3. Step 3: Cross multiply
    207,989.11x = 287,025.06 × 112,495.78
  4. Step 4: Simplify right side
    207,989.11x = 32,289,108,004.25
  5. Step 5: Solve for x
    x = 32,289,108,004.25/207,989.11
  6. Step 6: Final answer
    x = 155,244.22

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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.