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Finding the Fourth Proportional to 165,999.70, 249,031.95 and 71,229.70

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Solution

The fourth proportional to 165,999.70, 249,031.95 and 71,229.70 is: 106,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,999.70 : 249,031.95 = 71,229.70 : x
  2. Step 2: Convert to fraction form
    165,999.70/249,031.95 = 71,229.70/x
  3. Step 3: Cross multiply
    165,999.70x = 249,031.95 × 71,229.70
  4. Step 4: Simplify right side
    165,999.70x = 17,738,471,088.92
  5. Step 5: Solve for x
    x = 17,738,471,088.92/165,999.70
  6. Step 6: Final answer
    x = 106,858.45

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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.