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Finding the Fourth Proportional to 171,491.60, 257,237.40 and 87,510.80

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Solution

The fourth proportional to 171,491.60, 257,237.40 and 87,510.80 is: 131,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,491.60 : 257,237.40 = 87,510.80 : x
  2. Step 2: Convert to fraction form
    171,491.60/257,237.40 = 87,510.80/x
  3. Step 3: Cross multiply
    171,491.60x = 257,237.40 × 87,510.80
  4. Step 4: Simplify right side
    171,491.60x = 22,511,050,663.92
  5. Step 5: Solve for x
    x = 22,511,050,663.92/171,491.60
  6. Step 6: Final answer
    x = 131,266.20

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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.