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Finding the Fourth Proportional to 163,585.77, 225,745.13 and 90,987.10

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Solution

The fourth proportional to 163,585.77, 225,745.13 and 90,987.10 is: 125,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,585.77 : 225,745.13 = 90,987.10 : x
  2. Step 2: Convert to fraction form
    163,585.77/225,745.13 = 90,987.10/x
  3. Step 3: Cross multiply
    163,585.77x = 225,745.13 × 90,987.10
  4. Step 4: Simplify right side
    163,585.77x = 20,539,895,228.42
  5. Step 5: Solve for x
    x = 20,539,895,228.42/163,585.77
  6. Step 6: Final answer
    x = 125,560.40

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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.