Home / 160,638.21-221,680.41-88,041.15

Finding the Fourth Proportional to 160,638.21, 221,680.41 and 88,041.15

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Solution

The fourth proportional to 160,638.21, 221,680.41 and 88,041.15 is: 121,496.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,638.21 : 221,680.41 = 88,041.15 : x
  2. Step 2: Convert to fraction form
    160,638.21/221,680.41 = 88,041.15/x
  3. Step 3: Cross multiply
    160,638.21x = 221,680.41 × 88,041.15
  4. Step 4: Simplify right side
    160,638.21x = 19,516,998,228.87
  5. Step 5: Solve for x
    x = 19,516,998,228.87/160,638.21
  6. Step 6: Final answer
    x = 121,496.61

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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.