Home / 157,933.12-217,941.28-86,315.52

Finding the Fourth Proportional to 157,933.12, 217,941.28 and 86,315.52

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Solution

The fourth proportional to 157,933.12, 217,941.28 and 86,315.52 is: 119,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,933.12 : 217,941.28 = 86,315.52 : x
  2. Step 2: Convert to fraction form
    157,933.12/217,941.28 = 86,315.52/x
  3. Step 3: Cross multiply
    157,933.12x = 217,941.28 × 86,315.52
  4. Step 4: Simplify right side
    157,933.12x = 18,811,714,912.67
  5. Step 5: Solve for x
    x = 18,811,714,912.67/157,933.12
  6. Step 6: Final answer
    x = 119,111.91

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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.