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Finding the Fourth Proportional to 158,981.40, 238,860.90 and 119,615.40

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Solution

The fourth proportional to 158,981.40, 238,860.90 and 119,615.40 is: 179,715.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,981.40 : 238,860.90 = 119,615.40 : x
  2. Step 2: Convert to fraction form
    158,981.40/238,860.90 = 119,615.40/x
  3. Step 3: Cross multiply
    158,981.40x = 238,860.90 × 119,615.40
  4. Step 4: Simplify right side
    158,981.40x = 28,571,442,097.86
  5. Step 5: Solve for x
    x = 28,571,442,097.86/158,981.40
  6. Step 6: Final answer
    x = 179,715.63

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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.