Home / 155,932.90-215,186.35-87,950.43

Finding the Fourth Proportional to 155,932.90, 215,186.35 and 87,950.43

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Solution

The fourth proportional to 155,932.90, 215,186.35 and 87,950.43 is: 121,371.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,932.90 : 215,186.35 = 87,950.43 : x
  2. Step 2: Convert to fraction form
    155,932.90/215,186.35 = 87,950.43/x
  3. Step 3: Cross multiply
    155,932.90x = 215,186.35 × 87,950.43
  4. Step 4: Simplify right side
    155,932.90x = 18,925,732,315.51
  5. Step 5: Solve for x
    x = 18,925,732,315.51/155,932.90
  6. Step 6: Final answer
    x = 121,371.00

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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.