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Finding the Fourth Proportional to 161,561.70, 242,443.59 and 61,730.40

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Solution

The fourth proportional to 161,561.70, 242,443.59 and 61,730.40 is: 92,634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,561.70 : 242,443.59 = 61,730.40 : x
  2. Step 2: Convert to fraction form
    161,561.70/242,443.59 = 61,730.40/x
  3. Step 3: Cross multiply
    161,561.70x = 242,443.59 × 61,730.40
  4. Step 4: Simplify right side
    161,561.70x = 14,966,139,788.14
  5. Step 5: Solve for x
    x = 14,966,139,788.14/161,561.70
  6. Step 6: Final answer
    x = 92,634.21

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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.