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Finding the Fourth Proportional to 103,798.60, 155,568.30 and 76,064.20

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Solution

The fourth proportional to 103,798.60, 155,568.30 and 76,064.20 is: 114,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,798.60 : 155,568.30 = 76,064.20 : x
  2. Step 2: Convert to fraction form
    103,798.60/155,568.30 = 76,064.20/x
  3. Step 3: Cross multiply
    103,798.60x = 155,568.30 × 76,064.20
  4. Step 4: Simplify right side
    103,798.60x = 11,833,178,284.86
  5. Step 5: Solve for x
    x = 11,833,178,284.86/103,798.60
  6. Step 6: Final answer
    x = 114,001.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.