Home / 187,122.32-258,155.40-115,377.72

Finding the Fourth Proportional to 187,122.32, 258,155.40 and 115,377.72

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Solution

The fourth proportional to 187,122.32, 258,155.40 and 115,377.72 is: 159,175.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,122.32 : 258,155.40 = 115,377.72 : x
  2. Step 2: Convert to fraction form
    187,122.32/258,155.40 = 115,377.72/x
  3. Step 3: Cross multiply
    187,122.32x = 258,155.40 × 115,377.72
  4. Step 4: Simplify right side
    187,122.32x = 29,785,381,457.69
  5. Step 5: Solve for x
    x = 29,785,381,457.69/187,122.32
  6. Step 6: Final answer
    x = 159,175.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.