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Finding the Fourth Proportional to 135,005.60, 202,216.80 and 72,603.20

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Solution

The fourth proportional to 135,005.60, 202,216.80 and 72,603.20 is: 108,747.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,005.60 : 202,216.80 = 72,603.20 : x
  2. Step 2: Convert to fraction form
    135,005.60/202,216.80 = 72,603.20/x
  3. Step 3: Cross multiply
    135,005.60x = 202,216.80 × 72,603.20
  4. Step 4: Simplify right side
    135,005.60x = 14,681,586,773.76
  5. Step 5: Solve for x
    x = 14,681,586,773.76/135,005.60
  6. Step 6: Final answer
    x = 108,747.98

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1.5x scale

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.