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Finding the Fourth Proportional to 184,863.15, 255,111.14 and 99,980.21

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Solution

The fourth proportional to 184,863.15, 255,111.14 and 99,980.21 is: 137,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,863.15 : 255,111.14 = 99,980.21 : x
  2. Step 2: Convert to fraction form
    184,863.15/255,111.14 = 99,980.21/x
  3. Step 3: Cross multiply
    184,863.15x = 255,111.14 × 99,980.21
  4. Step 4: Simplify right side
    184,863.15x = 25,506,065,350.54
  5. Step 5: Solve for x
    x = 25,506,065,350.54/184,863.15
  6. Step 6: Final answer
    x = 137,972.69

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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.