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Finding the Fourth Proportional to 109,065.80, 163,598.70 and 67,075.40

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Solution

The fourth proportional to 109,065.80, 163,598.70 and 67,075.40 is: 100,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,065.80 : 163,598.70 = 67,075.40 : x
  2. Step 2: Convert to fraction form
    109,065.80/163,598.70 = 67,075.40/x
  3. Step 3: Cross multiply
    109,065.80x = 163,598.70 × 67,075.40
  4. Step 4: Simplify right side
    109,065.80x = 10,973,448,241.98
  5. Step 5: Solve for x
    x = 10,973,448,241.98/109,065.80
  6. Step 6: Final answer
    x = 100,613.10

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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.