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Finding the Fourth Proportional to 155,970.60, 234,036.90 and 72,864.60

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Solution

The fourth proportional to 155,970.60, 234,036.90 and 72,864.60 is: 109,334.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,970.60 : 234,036.90 = 72,864.60 : x
  2. Step 2: Convert to fraction form
    155,970.60/234,036.90 = 72,864.60/x
  3. Step 3: Cross multiply
    155,970.60x = 234,036.90 × 72,864.60
  4. Step 4: Simplify right side
    155,970.60x = 17,053,005,103.74
  5. Step 5: Solve for x
    x = 17,053,005,103.74/155,970.60
  6. Step 6: Final answer
    x = 109,334.74

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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.