Home / 153,395.16-211,617-89,704.88

Finding the Fourth Proportional to 153,395.16, 211,617 and 89,704.88

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Solution

The fourth proportional to 153,395.16, 211,617 and 89,704.88 is: 123,752.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,395.16 : 211,617 = 89,704.88 : x
  2. Step 2: Convert to fraction form
    153,395.16/211,617 = 89,704.88/x
  3. Step 3: Cross multiply
    153,395.16x = 211,617 × 89,704.88
  4. Step 4: Simplify right side
    153,395.16x = 18,983,077,590.96
  5. Step 5: Solve for x
    x = 18,983,077,590.96/153,395.16
  6. Step 6: Final answer
    x = 123,752.78

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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.