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Finding the Fourth Proportional to 86,851.86, 130,178.97 and 36,900.78

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Solution

The fourth proportional to 86,851.86, 130,178.97 and 36,900.78 is: 55,309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,851.86 : 130,178.97 = 36,900.78 : x
  2. Step 2: Convert to fraction form
    86,851.86/130,178.97 = 36,900.78/x
  3. Step 3: Cross multiply
    86,851.86x = 130,178.97 × 36,900.78
  4. Step 4: Simplify right side
    86,851.86x = 4,803,705,532.60
  5. Step 5: Solve for x
    x = 4,803,705,532.60/86,851.86
  6. Step 6: Final answer
    x = 55,309.18

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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.