Home / 202,085.43-278,876.21-111,445.17

Finding the Fourth Proportional to 202,085.43, 278,876.21 and 111,445.17

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Solution

The fourth proportional to 202,085.43, 278,876.21 and 111,445.17 is: 153,793.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,085.43 : 278,876.21 = 111,445.17 : x
  2. Step 2: Convert to fraction form
    202,085.43/278,876.21 = 111,445.17/x
  3. Step 3: Cross multiply
    202,085.43x = 278,876.21 × 111,445.17
  4. Step 4: Simplify right side
    202,085.43x = 31,079,406,075.18
  5. Step 5: Solve for x
    x = 31,079,406,075.18/202,085.43
  6. Step 6: Final answer
    x = 153,793.40

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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.