Home / 120,158.32-165,811.78-66,440.08

Finding the Fourth Proportional to 120,158.32, 165,811.78 and 66,440.08

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Solution

The fourth proportional to 120,158.32, 165,811.78 and 66,440.08 is: 91,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,158.32 : 165,811.78 = 66,440.08 : x
  2. Step 2: Convert to fraction form
    120,158.32/165,811.78 = 66,440.08/x
  3. Step 3: Cross multiply
    120,158.32x = 165,811.78 × 66,440.08
  4. Step 4: Simplify right side
    120,158.32x = 11,016,547,928.14
  5. Step 5: Solve for x
    x = 11,016,547,928.14/120,158.32
  6. Step 6: Final answer
    x = 91,683.60

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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.