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Finding the Fourth Proportional to 200,263.59, 300,169.40 and 81,870.35

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Solution

The fourth proportional to 200,263.59, 300,169.40 and 81,870.35 is: 122,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,263.59 : 300,169.40 = 81,870.35 : x
  2. Step 2: Convert to fraction form
    200,263.59/300,169.40 = 81,870.35/x
  3. Step 3: Cross multiply
    200,263.59x = 300,169.40 × 81,870.35
  4. Step 4: Simplify right side
    200,263.59x = 24,574,971,927.09
  5. Step 5: Solve for x
    x = 24,574,971,927.09/200,263.59
  6. Step 6: Final answer
    x = 122,713.13

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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.