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Finding the Fourth Proportional to 161,465.60, 242,284.80 and 72,732.80

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Solution

The fourth proportional to 161,465.60, 242,284.80 and 72,732.80 is: 109,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,465.60 : 242,284.80 = 72,732.80 : x
  2. Step 2: Convert to fraction form
    161,465.60/242,284.80 = 72,732.80/x
  3. Step 3: Cross multiply
    161,465.60x = 242,284.80 × 72,732.80
  4. Step 4: Simplify right side
    161,465.60x = 17,622,051,901.44
  5. Step 5: Solve for x
    x = 17,622,051,901.44/161,465.60
  6. Step 6: Final answer
    x = 109,138.12

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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.