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Finding the Fourth Proportional to 187,259.60, 280,889.40 and 81,966.80

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Solution

The fourth proportional to 187,259.60, 280,889.40 and 81,966.80 is: 122,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,259.60 : 280,889.40 = 81,966.80 : x
  2. Step 2: Convert to fraction form
    187,259.60/280,889.40 = 81,966.80/x
  3. Step 3: Cross multiply
    187,259.60x = 280,889.40 × 81,966.80
  4. Step 4: Simplify right side
    187,259.60x = 23,023,605,271.92
  5. Step 5: Solve for x
    x = 23,023,605,271.92/187,259.60
  6. Step 6: Final answer
    x = 122,950.20

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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.