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Finding the Fourth Proportional to 187,312.70, 280,969.05 and 124,327.10

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Solution

The fourth proportional to 187,312.70, 280,969.05 and 124,327.10 is: 186,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,312.70 : 280,969.05 = 124,327.10 : x
  2. Step 2: Convert to fraction form
    187,312.70/280,969.05 = 124,327.10/x
  3. Step 3: Cross multiply
    187,312.70x = 280,969.05 × 124,327.10
  4. Step 4: Simplify right side
    187,312.70x = 34,932,067,176.26
  5. Step 5: Solve for x
    x = 34,932,067,176.26/187,312.70
  6. Step 6: Final answer
    x = 186,490.65

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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.