Home / 207,981.10-287,014.23-112,487.74

Finding the Fourth Proportional to 207,981.10, 287,014.23 and 112,487.74

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Solution

The fourth proportional to 207,981.10, 287,014.23 and 112,487.74 is: 155,233.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,981.10 : 287,014.23 = 112,487.74 : x
  2. Step 2: Convert to fraction form
    207,981.10/287,014.23 = 112,487.74/x
  3. Step 3: Cross multiply
    207,981.10x = 287,014.23 × 112,487.74
  4. Step 4: Simplify right side
    207,981.10x = 32,285,582,080.54
  5. Step 5: Solve for x
    x = 32,285,582,080.54/207,981.10
  6. Step 6: Final answer
    x = 155,233.25

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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.