Home / 187,631.12-258,919.08-102,749.20

Finding the Fourth Proportional to 187,631.12, 258,919.08 and 102,749.20

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Solution

The fourth proportional to 187,631.12, 258,919.08 and 102,749.20 is: 141,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,631.12 : 258,919.08 = 102,749.20 : x
  2. Step 2: Convert to fraction form
    187,631.12/258,919.08 = 102,749.20/x
  3. Step 3: Cross multiply
    187,631.12x = 258,919.08 × 102,749.20
  4. Step 4: Simplify right side
    187,631.12x = 26,603,728,334.74
  5. Step 5: Solve for x
    x = 26,603,728,334.74/187,631.12
  6. Step 6: Final answer
    x = 141,787.40

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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.