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Finding the Fourth Proportional to 161,387.08, 242,081.70 and 56,205.70

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Solution

The fourth proportional to 161,387.08, 242,081.70 and 56,205.70 is: 84,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,387.08 : 242,081.70 = 56,205.70 : x
  2. Step 2: Convert to fraction form
    161,387.08/242,081.70 = 56,205.70/x
  3. Step 3: Cross multiply
    161,387.08x = 242,081.70 × 56,205.70
  4. Step 4: Simplify right side
    161,387.08x = 13,606,371,405.69
  5. Step 5: Solve for x
    x = 13,606,371,405.69/161,387.08
  6. Step 6: Final answer
    x = 84,308.93

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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.