Home / 103,132.32-142,317.84-58,420.64

Finding the Fourth Proportional to 103,132.32, 142,317.84 and 58,420.64

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Solution

The fourth proportional to 103,132.32, 142,317.84 and 58,420.64 is: 80,617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,132.32 : 142,317.84 = 58,420.64 : x
  2. Step 2: Convert to fraction form
    103,132.32/142,317.84 = 58,420.64/x
  3. Step 3: Cross multiply
    103,132.32x = 142,317.84 × 58,420.64
  4. Step 4: Simplify right side
    103,132.32x = 8,314,299,296.22
  5. Step 5: Solve for x
    x = 8,314,299,296.22/103,132.32
  6. Step 6: Final answer
    x = 80,617.79

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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.