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Finding the Fourth Proportional to 118,001.76, 162,855.54 and 72,670.80

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Solution

The fourth proportional to 118,001.76, 162,855.54 and 72,670.80 is: 100,293.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,001.76 : 162,855.54 = 72,670.80 : x
  2. Step 2: Convert to fraction form
    118,001.76/162,855.54 = 72,670.80/x
  3. Step 3: Cross multiply
    118,001.76x = 162,855.54 × 72,670.80
  4. Step 4: Simplify right side
    118,001.76x = 11,834,842,376.23
  5. Step 5: Solve for x
    x = 11,834,842,376.23/118,001.76
  6. Step 6: Final answer
    x = 100,293.78

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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.