Home / 161,837.20-242,828.70-77,564.80

Finding the Fourth Proportional to 161,837.20, 242,828.70 and 77,564.80

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Solution

The fourth proportional to 161,837.20, 242,828.70 and 77,564.80 is: 116,382.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,837.20 : 242,828.70 = 77,564.80 : x
  2. Step 2: Convert to fraction form
    161,837.20/242,828.70 = 77,564.80/x
  3. Step 3: Cross multiply
    161,837.20x = 242,828.70 × 77,564.80
  4. Step 4: Simplify right side
    161,837.20x = 18,834,959,549.76
  5. Step 5: Solve for x
    x = 18,834,959,549.76/161,837.20
  6. Step 6: Final answer
    x = 116,382.14

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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.