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Finding the Fourth Proportional to 155,034.95, 213,945.50 and 87,052.46

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Solution

The fourth proportional to 155,034.95, 213,945.50 and 87,052.46 is: 120,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,034.95 : 213,945.50 = 87,052.46 : x
  2. Step 2: Convert to fraction form
    155,034.95/213,945.50 = 87,052.46/x
  3. Step 3: Cross multiply
    155,034.95x = 213,945.50 × 87,052.46
  4. Step 4: Simplify right side
    155,034.95x = 18,624,481,228.83
  5. Step 5: Solve for x
    x = 18,624,481,228.83/155,034.95
  6. Step 6: Final answer
    x = 120,130.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.