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Finding the Fourth Proportional to 187,391.52, 258,510.96 and 115,745.76

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Solution

The fourth proportional to 187,391.52, 258,510.96 and 115,745.76 is: 159,673.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,391.52 : 258,510.96 = 115,745.76 : x
  2. Step 2: Convert to fraction form
    187,391.52/258,510.96 = 115,745.76/x
  3. Step 3: Cross multiply
    187,391.52x = 258,510.96 × 115,745.76
  4. Step 4: Simplify right side
    187,391.52x = 29,921,547,533.53
  5. Step 5: Solve for x
    x = 29,921,547,533.53/187,391.52
  6. Step 6: Final answer
    x = 159,673.97

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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.