Home / 207,155.45-310,897.20-80,856.20

Finding the Fourth Proportional to 207,155.45, 310,897.20 and 80,856.20

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Solution

The fourth proportional to 207,155.45, 310,897.20 and 80,856.20 is: 121,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,155.45 : 310,897.20 = 80,856.20 : x
  2. Step 2: Convert to fraction form
    207,155.45/310,897.20 = 80,856.20/x
  3. Step 3: Cross multiply
    207,155.45x = 310,897.20 × 80,856.20
  4. Step 4: Simplify right side
    207,155.45x = 25,137,966,182.64
  5. Step 5: Solve for x
    x = 25,137,966,182.64/207,155.45
  6. Step 6: Final answer
    x = 121,348.32

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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.