Home / 88,189.12-121,697.53-52,378.21

Finding the Fourth Proportional to 88,189.12, 121,697.53 and 52,378.21

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Solution

The fourth proportional to 88,189.12, 121,697.53 and 52,378.21 is: 72,279.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,189.12 : 121,697.53 = 52,378.21 : x
  2. Step 2: Convert to fraction form
    88,189.12/121,697.53 = 52,378.21/x
  3. Step 3: Cross multiply
    88,189.12x = 121,697.53 × 52,378.21
  4. Step 4: Simplify right side
    88,189.12x = 6,374,298,782.82
  5. Step 5: Solve for x
    x = 6,374,298,782.82/88,189.12
  6. Step 6: Final answer
    x = 72,279.88

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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.