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Finding the Fourth Proportional to 118,597.12, 163,798.40 and 80,805.76

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Solution

The fourth proportional to 118,597.12, 163,798.40 and 80,805.76 is: 111,603.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,597.12 : 163,798.40 = 80,805.76 : x
  2. Step 2: Convert to fraction form
    118,597.12/163,798.40 = 80,805.76/x
  3. Step 3: Cross multiply
    118,597.12x = 163,798.40 × 80,805.76
  4. Step 4: Simplify right side
    118,597.12x = 13,235,854,198.78
  5. Step 5: Solve for x
    x = 13,235,854,198.78/118,597.12
  6. Step 6: Final answer
    x = 111,603.50

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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.