Home / 103,747.36-142,971.60-75,408.16

Finding the Fourth Proportional to 103,747.36, 142,971.60 and 75,408.16

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Solution

The fourth proportional to 103,747.36, 142,971.60 and 75,408.16 is: 103,918.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,747.36 : 142,971.60 = 75,408.16 : x
  2. Step 2: Convert to fraction form
    103,747.36/142,971.60 = 75,408.16/x
  3. Step 3: Cross multiply
    103,747.36x = 142,971.60 × 75,408.16
  4. Step 4: Simplify right side
    103,747.36x = 10,781,225,288.26
  5. Step 5: Solve for x
    x = 10,781,225,288.26/103,747.36
  6. Step 6: Final answer
    x = 103,918.07

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1.5x scale

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.