Home / 212,275.98-318,298.68-105,425.51

Finding the Fourth Proportional to 212,275.98, 318,298.68 and 105,425.51

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Solution

The fourth proportional to 212,275.98, 318,298.68 and 105,425.51 is: 158,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,275.98 : 318,298.68 = 105,425.51 : x
  2. Step 2: Convert to fraction form
    212,275.98/318,298.68 = 105,425.51/x
  3. Step 3: Cross multiply
    212,275.98x = 318,298.68 × 105,425.51
  4. Step 4: Simplify right side
    212,275.98x = 33,556,799,079.83
  5. Step 5: Solve for x
    x = 33,556,799,079.83/212,275.98
  6. Step 6: Final answer
    x = 158,081.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.