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Finding the Fourth Proportional to 109,643.78, 151,308.78 and 59,342.78

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Solution

The fourth proportional to 109,643.78, 151,308.78 and 59,342.78 is: 81,893.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,643.78 : 151,308.78 = 59,342.78 : x
  2. Step 2: Convert to fraction form
    109,643.78/151,308.78 = 59,342.78/x
  3. Step 3: Cross multiply
    109,643.78x = 151,308.78 × 59,342.78
  4. Step 4: Simplify right side
    109,643.78x = 8,979,083,643.61
  5. Step 5: Solve for x
    x = 8,979,083,643.61/109,643.78
  6. Step 6: Final answer
    x = 81,893.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.