Home / 202,081.48-278,888.34-111,445.72

Finding the Fourth Proportional to 202,081.48, 278,888.34 and 111,445.72

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Solution

The fourth proportional to 202,081.48, 278,888.34 and 111,445.72 is: 153,803.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,081.48 : 278,888.34 = 111,445.72 : x
  2. Step 2: Convert to fraction form
    202,081.48/278,888.34 = 111,445.72/x
  3. Step 3: Cross multiply
    202,081.48x = 278,888.34 × 111,445.72
  4. Step 4: Simplify right side
    202,081.48x = 31,080,911,850.90
  5. Step 5: Solve for x
    x = 31,080,911,850.90/202,081.48
  6. Step 6: Final answer
    x = 153,803.86

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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.