Home / 90,818.21-125,501.94-68,117.78

Finding the Fourth Proportional to 90,818.21, 125,501.94 and 68,117.78

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Solution

The fourth proportional to 90,818.21, 125,501.94 and 68,117.78 is: 94,132.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,818.21 : 125,501.94 = 68,117.78 : x
  2. Step 2: Convert to fraction form
    90,818.21/125,501.94 = 68,117.78/x
  3. Step 3: Cross multiply
    90,818.21x = 125,501.94 × 68,117.78
  4. Step 4: Simplify right side
    90,818.21x = 8,548,913,852.25
  5. Step 5: Solve for x
    x = 8,548,913,852.25/90,818.21
  6. Step 6: Final answer
    x = 94,132.15

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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.