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Finding the Fourth Proportional to 165,859.20, 249,403.20 and 138,825.60

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Solution

The fourth proportional to 165,859.20, 249,403.20 and 138,825.60 is: 208,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,859.20 : 249,403.20 = 138,825.60 : x
  2. Step 2: Convert to fraction form
    165,859.20/249,403.20 = 138,825.60/x
  3. Step 3: Cross multiply
    165,859.20x = 249,403.20 × 138,825.60
  4. Step 4: Simplify right side
    165,859.20x = 34,623,548,881.92
  5. Step 5: Solve for x
    x = 34,623,548,881.92/165,859.20
  6. Step 6: Final answer
    x = 208,752.66

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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.