Home / 109,380.30-163,742.40-64,984.20

Finding the Fourth Proportional to 109,380.30, 163,742.40 and 64,984.20

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Solution

The fourth proportional to 109,380.30, 163,742.40 and 64,984.20 is: 97,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,380.30 : 163,742.40 = 64,984.20 : x
  2. Step 2: Convert to fraction form
    109,380.30/163,742.40 = 64,984.20/x
  3. Step 3: Cross multiply
    109,380.30x = 163,742.40 × 64,984.20
  4. Step 4: Simplify right side
    109,380.30x = 10,640,668,870.08
  5. Step 5: Solve for x
    x = 10,640,668,870.08/109,380.30
  6. Step 6: Final answer
    x = 97,281.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.