Home / 187,107.74-258,135.40-115,363.21

Finding the Fourth Proportional to 187,107.74, 258,135.40 and 115,363.21

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Solution

The fourth proportional to 187,107.74, 258,135.40 and 115,363.21 is: 159,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,107.74 : 258,135.40 = 115,363.21 : x
  2. Step 2: Convert to fraction form
    187,107.74/258,135.40 = 115,363.21/x
  3. Step 3: Cross multiply
    187,107.74x = 258,135.40 × 115,363.21
  4. Step 4: Simplify right side
    187,107.74x = 29,779,328,358.63
  5. Step 5: Solve for x
    x = 29,779,328,358.63/187,107.74
  6. Step 6: Final answer
    x = 159,156.05

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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.