Home / 109,036.20-163,554.30-71,711.40

Finding the Fourth Proportional to 109,036.20, 163,554.30 and 71,711.40

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Solution

The fourth proportional to 109,036.20, 163,554.30 and 71,711.40 is: 107,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,036.20 : 163,554.30 = 71,711.40 : x
  2. Step 2: Convert to fraction form
    109,036.20/163,554.30 = 71,711.40/x
  3. Step 3: Cross multiply
    109,036.20x = 163,554.30 × 71,711.40
  4. Step 4: Simplify right side
    109,036.20x = 11,728,707,829.02
  5. Step 5: Solve for x
    x = 11,728,707,829.02/109,036.20
  6. Step 6: Final answer
    x = 107,567.10

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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.