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Finding the Fourth Proportional to 161,607.55, 242,242.87 and 90,425.82

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Solution

The fourth proportional to 161,607.55, 242,242.87 and 90,425.82 is: 135,544.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,607.55 : 242,242.87 = 90,425.82 : x
  2. Step 2: Convert to fraction form
    161,607.55/242,242.87 = 90,425.82/x
  3. Step 3: Cross multiply
    161,607.55x = 242,242.87 × 90,425.82
  4. Step 4: Simplify right side
    161,607.55x = 21,905,009,620.96
  5. Step 5: Solve for x
    x = 21,905,009,620.96/161,607.55
  6. Step 6: Final answer
    x = 135,544.47

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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.