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Finding the Fourth Proportional to 141,883.60, 212,825.40 and 86,587.60

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Solution

The fourth proportional to 141,883.60, 212,825.40 and 86,587.60 is: 129,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,883.60 : 212,825.40 = 86,587.60 : x
  2. Step 2: Convert to fraction form
    141,883.60/212,825.40 = 86,587.60/x
  3. Step 3: Cross multiply
    141,883.60x = 212,825.40 × 86,587.60
  4. Step 4: Simplify right side
    141,883.60x = 18,428,040,605.04
  5. Step 5: Solve for x
    x = 18,428,040,605.04/141,883.60
  6. Step 6: Final answer
    x = 129,881.40

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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.