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Finding the Fourth Proportional to 132,811.20, 199,216.80 and 70,603.20

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Solution

The fourth proportional to 132,811.20, 199,216.80 and 70,603.20 is: 105,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,811.20 : 199,216.80 = 70,603.20 : x
  2. Step 2: Convert to fraction form
    132,811.20/199,216.80 = 70,603.20/x
  3. Step 3: Cross multiply
    132,811.20x = 199,216.80 × 70,603.20
  4. Step 4: Simplify right side
    132,811.20x = 14,065,343,573.76
  5. Step 5: Solve for x
    x = 14,065,343,573.76/132,811.20
  6. Step 6: Final answer
    x = 105,904.80

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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.