Home / 187,089.40-280,439.70-102,719.80

Finding the Fourth Proportional to 187,089.40, 280,439.70 and 102,719.80

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Solution

The fourth proportional to 187,089.40, 280,439.70 and 102,719.80 is: 153,972.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,089.40 : 280,439.70 = 102,719.80 : x
  2. Step 2: Convert to fraction form
    187,089.40/280,439.70 = 102,719.80/x
  3. Step 3: Cross multiply
    187,089.40x = 280,439.70 × 102,719.80
  4. Step 4: Simplify right side
    187,089.40x = 28,806,709,896.06
  5. Step 5: Solve for x
    x = 28,806,709,896.06/187,089.40
  6. Step 6: Final answer
    x = 153,972.97

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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.