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Finding the Fourth Proportional to 166,587.30, 249,917.40 and 66,722.40

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Solution

The fourth proportional to 166,587.30, 249,917.40 and 66,722.40 is: 100,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,587.30 : 249,917.40 = 66,722.40 : x
  2. Step 2: Convert to fraction form
    166,587.30/249,917.40 = 66,722.40/x
  3. Step 3: Cross multiply
    166,587.30x = 249,917.40 × 66,722.40
  4. Step 4: Simplify right side
    166,587.30x = 16,675,088,729.76
  5. Step 5: Solve for x
    x = 16,675,088,729.76/166,587.30
  6. Step 6: Final answer
    x = 100,098.20

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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.