Home / 210,761.10-315,485.55-121,750.20

Finding the Fourth Proportional to 210,761.10, 315,485.55 and 121,750.20

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Solution

The fourth proportional to 210,761.10, 315,485.55 and 121,750.20 is: 182,246.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,761.10 : 315,485.55 = 121,750.20 : x
  2. Step 2: Convert to fraction form
    210,761.10/315,485.55 = 121,750.20/x
  3. Step 3: Cross multiply
    210,761.10x = 315,485.55 × 121,750.20
  4. Step 4: Simplify right side
    210,761.10x = 38,410,428,809.61
  5. Step 5: Solve for x
    x = 38,410,428,809.61/210,761.10
  6. Step 6: Final answer
    x = 182,246.29

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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.