Home / 160,811.32-221,774.35-100,387.54

Finding the Fourth Proportional to 160,811.32, 221,774.35 and 100,387.54

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Solution

The fourth proportional to 160,811.32, 221,774.35 and 100,387.54 is: 138,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,811.32 : 221,774.35 = 100,387.54 : x
  2. Step 2: Convert to fraction form
    160,811.32/221,774.35 = 100,387.54/x
  3. Step 3: Cross multiply
    160,811.32x = 221,774.35 × 100,387.54
  4. Step 4: Simplify right side
    160,811.32x = 22,263,381,431.60
  5. Step 5: Solve for x
    x = 22,263,381,431.60/160,811.32
  6. Step 6: Final answer
    x = 138,444.12

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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.