Home / 105,431.29-157,971.97-74,200.93

Finding the Fourth Proportional to 105,431.29, 157,971.97 and 74,200.93

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Solution

The fourth proportional to 105,431.29, 157,971.97 and 74,200.93 is: 111,178.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,431.29 : 157,971.97 = 74,200.93 : x
  2. Step 2: Convert to fraction form
    105,431.29/157,971.97 = 74,200.93/x
  3. Step 3: Cross multiply
    105,431.29x = 157,971.97 × 74,200.93
  4. Step 4: Simplify right side
    105,431.29x = 11,721,666,785.75
  5. Step 5: Solve for x
    x = 11,721,666,785.75/105,431.29
  6. Step 6: Final answer
    x = 111,178.26

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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.