Home / 143,278.16-197,709.14-89,569.09

Finding the Fourth Proportional to 143,278.16, 197,709.14 and 89,569.09

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Solution

The fourth proportional to 143,278.16, 197,709.14 and 89,569.09 is: 123,596.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,278.16 : 197,709.14 = 89,569.09 : x
  2. Step 2: Convert to fraction form
    143,278.16/197,709.14 = 89,569.09/x
  3. Step 3: Cross multiply
    143,278.16x = 197,709.14 × 89,569.09
  4. Step 4: Simplify right side
    143,278.16x = 17,708,626,318.09
  5. Step 5: Solve for x
    x = 17,708,626,318.09/143,278.16
  6. Step 6: Final answer
    x = 123,596.13

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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.