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Finding the Fourth Proportional to 109,165.80, 163,756.26 and 42,583.80

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Solution

The fourth proportional to 109,165.80, 163,756.26 and 42,583.80 is: 63,878.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,165.80 : 163,756.26 = 42,583.80 : x
  2. Step 2: Convert to fraction form
    109,165.80/163,756.26 = 42,583.80/x
  3. Step 3: Cross multiply
    109,165.80x = 163,756.26 × 42,583.80
  4. Step 4: Simplify right side
    109,165.80x = 6,973,363,824.59
  5. Step 5: Solve for x
    x = 6,973,363,824.59/109,165.80
  6. Step 6: Final answer
    x = 63,878.65

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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.