Home / 118,683.88-163,961.76-77,944.66

Finding the Fourth Proportional to 118,683.88, 163,961.76 and 77,944.66

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Solution

The fourth proportional to 118,683.88, 163,961.76 and 77,944.66 is: 107,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,683.88 : 163,961.76 = 77,944.66 : x
  2. Step 2: Convert to fraction form
    118,683.88/163,961.76 = 77,944.66/x
  3. Step 3: Cross multiply
    118,683.88x = 163,961.76 × 77,944.66
  4. Step 4: Simplify right side
    118,683.88x = 12,779,943,636.20
  5. Step 5: Solve for x
    x = 12,779,943,636.20/118,683.88
  6. Step 6: Final answer
    x = 107,680.53

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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.