Home / 109,023.20-163,534.80-71,698.40

Finding the Fourth Proportional to 109,023.20, 163,534.80 and 71,698.40

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Solution

The fourth proportional to 109,023.20, 163,534.80 and 71,698.40 is: 107,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,023.20 : 163,534.80 = 71,698.40 : x
  2. Step 2: Convert to fraction form
    109,023.20/163,534.80 = 71,698.40/x
  3. Step 3: Cross multiply
    109,023.20x = 163,534.80 × 71,698.40
  4. Step 4: Simplify right side
    109,023.20x = 11,725,183,504.32
  5. Step 5: Solve for x
    x = 11,725,183,504.32/109,023.20
  6. Step 6: Final answer
    x = 107,547.60

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1.5x scale

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.