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Finding the Fourth Proportional to 152,992.40, 229,423.80 and 74,130.80

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Solution

The fourth proportional to 152,992.40, 229,423.80 and 74,130.80 is: 111,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,992.40 : 229,423.80 = 74,130.80 : x
  2. Step 2: Convert to fraction form
    152,992.40/229,423.80 = 74,130.80/x
  3. Step 3: Cross multiply
    152,992.40x = 229,423.80 × 74,130.80
  4. Step 4: Simplify right side
    152,992.40x = 17,007,369,833.04
  5. Step 5: Solve for x
    x = 17,007,369,833.04/152,992.40
  6. Step 6: Final answer
    x = 111,164.80

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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.