Home / 111,370.35-153,689.22-62,971.50

Finding the Fourth Proportional to 111,370.35, 153,689.22 and 62,971.50

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Solution

The fourth proportional to 111,370.35, 153,689.22 and 62,971.50 is: 86,899.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,370.35 : 153,689.22 = 62,971.50 : x
  2. Step 2: Convert to fraction form
    111,370.35/153,689.22 = 62,971.50/x
  3. Step 3: Cross multiply
    111,370.35x = 153,689.22 × 62,971.50
  4. Step 4: Simplify right side
    111,370.35x = 9,678,040,717.23
  5. Step 5: Solve for x
    x = 9,678,040,717.23/111,370.35
  6. Step 6: Final answer
    x = 86,899.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.