Home / 121,814.16-182,682.36-38,688.72

Finding the Fourth Proportional to 121,814.16, 182,682.36 and 38,688.72

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Solution

The fourth proportional to 121,814.16, 182,682.36 and 38,688.72 is: 58,020.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,814.16 : 182,682.36 = 38,688.72 : x
  2. Step 2: Convert to fraction form
    121,814.16/182,682.36 = 38,688.72/x
  3. Step 3: Cross multiply
    121,814.16x = 182,682.36 × 38,688.72
  4. Step 4: Simplify right side
    121,814.16x = 7,067,746,674.98
  5. Step 5: Solve for x
    x = 7,067,746,674.98/121,814.16
  6. Step 6: Final answer
    x = 58,020.73

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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.