Home / 88,188.12-121,696.16-52,377.21

Finding the Fourth Proportional to 88,188.12, 121,696.16 and 52,377.21

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Solution

The fourth proportional to 88,188.12, 121,696.16 and 52,377.21 is: 72,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,188.12 : 121,696.16 = 52,377.21 : x
  2. Step 2: Convert to fraction form
    88,188.12/121,696.16 = 52,377.21/x
  3. Step 3: Cross multiply
    88,188.12x = 121,696.16 × 52,377.21
  4. Step 4: Simplify right side
    88,188.12x = 6,374,105,066.63
  5. Step 5: Solve for x
    x = 6,374,105,066.63/88,188.12
  6. Step 6: Final answer
    x = 72,278.50

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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.