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Finding the Fourth Proportional to 136,002.80, 203,955.60 and 47,259.20

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Solution

The fourth proportional to 136,002.80, 203,955.60 and 47,259.20 is: 70,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,002.80 : 203,955.60 = 47,259.20 : x
  2. Step 2: Convert to fraction form
    136,002.80/203,955.60 = 47,259.20/x
  3. Step 3: Cross multiply
    136,002.80x = 203,955.60 × 47,259.20
  4. Step 4: Simplify right side
    136,002.80x = 9,638,778,491.52
  5. Step 5: Solve for x
    x = 9,638,778,491.52/136,002.80
  6. Step 6: Final answer
    x = 70,871.91

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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.