Home / 109,031.20-163,651.20-56,478.40

Finding the Fourth Proportional to 109,031.20, 163,651.20 and 56,478.40

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Solution

The fourth proportional to 109,031.20, 163,651.20 and 56,478.40 is: 84,771.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,031.20 : 163,651.20 = 56,478.40 : x
  2. Step 2: Convert to fraction form
    109,031.20/163,651.20 = 56,478.40/x
  3. Step 3: Cross multiply
    109,031.20x = 163,651.20 × 56,478.40
  4. Step 4: Simplify right side
    109,031.20x = 9,242,757,934.08
  5. Step 5: Solve for x
    x = 9,242,757,934.08/109,031.20
  6. Step 6: Final answer
    x = 84,771.68

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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.