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Finding the Fourth Proportional to 141,763.40, 212,426.40 and 122,955.20

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Solution

The fourth proportional to 141,763.40, 212,426.40 and 122,955.20 is: 184,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,763.40 : 212,426.40 = 122,955.20 : x
  2. Step 2: Convert to fraction form
    141,763.40/212,426.40 = 122,955.20/x
  3. Step 3: Cross multiply
    141,763.40x = 212,426.40 × 122,955.20
  4. Step 4: Simplify right side
    141,763.40x = 26,118,930,497.28
  5. Step 5: Solve for x
    x = 26,118,930,497.28/141,763.40
  6. Step 6: Final answer
    x = 184,243.12

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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.