Home / 153,043.20-211,215.96-89,401.68

Finding the Fourth Proportional to 153,043.20, 211,215.96 and 89,401.68

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Solution

The fourth proportional to 153,043.20, 211,215.96 and 89,401.68 is: 123,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,043.20 : 211,215.96 = 89,401.68 : x
  2. Step 2: Convert to fraction form
    153,043.20/211,215.96 = 89,401.68/x
  3. Step 3: Cross multiply
    153,043.20x = 211,215.96 × 89,401.68
  4. Step 4: Simplify right side
    153,043.20x = 18,883,061,666.81
  5. Step 5: Solve for x
    x = 18,883,061,666.81/153,043.20
  6. Step 6: Final answer
    x = 123,383.87

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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.