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Finding the Fourth Proportional to 161,887.70, 242,830.02 and 90,810.20

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Solution

The fourth proportional to 161,887.70, 242,830.02 and 90,810.20 is: 136,214.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,887.70 : 242,830.02 = 90,810.20 : x
  2. Step 2: Convert to fraction form
    161,887.70/242,830.02 = 90,810.20/x
  3. Step 3: Cross multiply
    161,887.70x = 242,830.02 × 90,810.20
  4. Step 4: Simplify right side
    161,887.70x = 22,051,441,468.05
  5. Step 5: Solve for x
    x = 22,051,441,468.05/161,887.70
  6. Step 6: Final answer
    x = 136,214.44

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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.