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Finding the Fourth Proportional to 76,156.68, 114,235.20 and 20,752.68

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Solution

The fourth proportional to 76,156.68, 114,235.20 and 20,752.68 is: 31,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,156.68 : 114,235.20 = 20,752.68 : x
  2. Step 2: Convert to fraction form
    76,156.68/114,235.20 = 20,752.68/x
  3. Step 3: Cross multiply
    76,156.68x = 114,235.20 × 20,752.68
  4. Step 4: Simplify right side
    76,156.68x = 2,370,686,550.34
  5. Step 5: Solve for x
    x = 2,370,686,550.34/76,156.68
  6. Step 6: Final answer
    x = 31,129.07

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1.5x scale

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.