Home / 107,981.10-161,971.65-61,325.10

Finding the Fourth Proportional to 107,981.10, 161,971.65 and 61,325.10

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Solution

The fourth proportional to 107,981.10, 161,971.65 and 61,325.10 is: 91,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,981.10 : 161,971.65 = 61,325.10 : x
  2. Step 2: Convert to fraction form
    107,981.10/161,971.65 = 61,325.10/x
  3. Step 3: Cross multiply
    107,981.10x = 161,971.65 × 61,325.10
  4. Step 4: Simplify right side
    107,981.10x = 9,932,927,633.42
  5. Step 5: Solve for x
    x = 9,932,927,633.42/107,981.10
  6. Step 6: Final answer
    x = 91,987.65

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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.