Home / 111,109.28-153,345.48-62,720.96

Finding the Fourth Proportional to 111,109.28, 153,345.48 and 62,720.96

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Solution

The fourth proportional to 111,109.28, 153,345.48 and 62,720.96 is: 86,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,109.28 : 153,345.48 = 62,720.96 : x
  2. Step 2: Convert to fraction form
    111,109.28/153,345.48 = 62,720.96/x
  3. Step 3: Cross multiply
    111,109.28x = 153,345.48 × 62,720.96
  4. Step 4: Simplify right side
    111,109.28x = 9,617,975,717.26
  5. Step 5: Solve for x
    x = 9,617,975,717.26/111,109.28
  6. Step 6: Final answer
    x = 86,563.21

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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.