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Finding the Fourth Proportional to 160,161.93, 240,387.81 and 85,345.29

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Solution

The fourth proportional to 160,161.93, 240,387.81 and 85,345.29 is: 128,095.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,161.93 : 240,387.81 = 85,345.29 : x
  2. Step 2: Convert to fraction form
    160,161.93/240,387.81 = 85,345.29/x
  3. Step 3: Cross multiply
    160,161.93x = 240,387.81 × 85,345.29
  4. Step 4: Simplify right side
    160,161.93x = 20,515,967,356.91
  5. Step 5: Solve for x
    x = 20,515,967,356.91/160,161.93
  6. Step 6: Final answer
    x = 128,095.16

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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.