Home / 157,932.64-217,947.16-86,312.66

Finding the Fourth Proportional to 157,932.64, 217,947.16 and 86,312.66

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Solution

The fourth proportional to 157,932.64, 217,947.16 and 86,312.66 is: 119,111.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,932.64 : 217,947.16 = 86,312.66 : x
  2. Step 2: Convert to fraction form
    157,932.64/217,947.16 = 86,312.66/x
  3. Step 3: Cross multiply
    157,932.64x = 217,947.16 × 86,312.66
  4. Step 4: Simplify right side
    157,932.64x = 18,811,599,119.05
  5. Step 5: Solve for x
    x = 18,811,599,119.05/157,932.64
  6. Step 6: Final answer
    x = 119,111.53

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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.