Home / 103,721.60-155,590.58-51,102.40

Finding the Fourth Proportional to 103,721.60, 155,590.58 and 51,102.40

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Solution

The fourth proportional to 103,721.60, 155,590.58 and 51,102.40 is: 76,657.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,721.60 : 155,590.58 = 51,102.40 : x
  2. Step 2: Convert to fraction form
    103,721.60/155,590.58 = 51,102.40/x
  3. Step 3: Cross multiply
    103,721.60x = 155,590.58 × 51,102.40
  4. Step 4: Simplify right side
    103,721.60x = 7,951,052,055.39
  5. Step 5: Solve for x
    x = 7,951,052,055.39/103,721.60
  6. Step 6: Final answer
    x = 76,657.63

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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.