Home / 187,115.40-280,586.70-81,880.20

Finding the Fourth Proportional to 187,115.40, 280,586.70 and 81,880.20

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Solution

The fourth proportional to 187,115.40, 280,586.70 and 81,880.20 is: 122,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,115.40 : 280,586.70 = 81,880.20 : x
  2. Step 2: Convert to fraction form
    187,115.40/280,586.70 = 81,880.20/x
  3. Step 3: Cross multiply
    187,115.40x = 280,586.70 × 81,880.20
  4. Step 4: Simplify right side
    187,115.40x = 22,974,495,113.34
  5. Step 5: Solve for x
    x = 22,974,495,113.34/187,115.40
  6. Step 6: Final answer
    x = 122,782.49

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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.