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Finding the Fourth Proportional to 190,565.22, 285,787.86 and 68,970.06

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Solution

The fourth proportional to 190,565.22, 285,787.86 and 68,970.06 is: 103,433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,565.22 : 285,787.86 = 68,970.06 : x
  2. Step 2: Convert to fraction form
    190,565.22/285,787.86 = 68,970.06/x
  3. Step 3: Cross multiply
    190,565.22x = 285,787.86 × 68,970.06
  4. Step 4: Simplify right side
    190,565.22x = 19,710,805,851.47
  5. Step 5: Solve for x
    x = 19,710,805,851.47/190,565.22
  6. Step 6: Final answer
    x = 103,433.39

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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.