Home / 118,216.20-163,102.82-77,915.48

Finding the Fourth Proportional to 118,216.20, 163,102.82 and 77,915.48

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Solution

The fourth proportional to 118,216.20, 163,102.82 and 77,915.48 is: 107,499.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,216.20 : 163,102.82 = 77,915.48 : x
  2. Step 2: Convert to fraction form
    118,216.20/163,102.82 = 77,915.48/x
  3. Step 3: Cross multiply
    118,216.20x = 163,102.82 × 77,915.48
  4. Step 4: Simplify right side
    118,216.20x = 12,708,234,509.65
  5. Step 5: Solve for x
    x = 12,708,234,509.65/118,216.20
  6. Step 6: Final answer
    x = 107,499.94

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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.