Home / 100,132.86-138,183.32-54,810.93

Finding the Fourth Proportional to 100,132.86, 138,183.32 and 54,810.93

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Solution

The fourth proportional to 100,132.86, 138,183.32 and 54,810.93 is: 75,639.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,132.86 : 138,183.32 = 54,810.93 : x
  2. Step 2: Convert to fraction form
    100,132.86/138,183.32 = 54,810.93/x
  3. Step 3: Cross multiply
    100,132.86x = 138,183.32 × 54,810.93
  4. Step 4: Simplify right side
    100,132.86x = 7,573,956,416.71
  5. Step 5: Solve for x
    x = 7,573,956,416.71/100,132.86
  6. Step 6: Final answer
    x = 75,639.07

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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.