Home / 103,688.86-155,527.80-51,080.57

Finding the Fourth Proportional to 103,688.86, 155,527.80 and 51,080.57

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Solution

The fourth proportional to 103,688.86, 155,527.80 and 51,080.57 is: 76,618.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.86 : 155,527.80 = 51,080.57 : x
  2. Step 2: Convert to fraction form
    103,688.86/155,527.80 = 51,080.57/x
  3. Step 3: Cross multiply
    103,688.86x = 155,527.80 × 51,080.57
  4. Step 4: Simplify right side
    103,688.86x = 7,944,448,674.85
  5. Step 5: Solve for x
    x = 7,944,448,674.85/103,688.86
  6. Step 6: Final answer
    x = 76,618.15

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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.