Home / 135,464.18-186,931.91-78,100.52

Finding the Fourth Proportional to 135,464.18, 186,931.91 and 78,100.52

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Solution

The fourth proportional to 135,464.18, 186,931.91 and 78,100.52 is: 107,773.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,464.18 : 186,931.91 = 78,100.52 : x
  2. Step 2: Convert to fraction form
    135,464.18/186,931.91 = 78,100.52/x
  3. Step 3: Cross multiply
    135,464.18x = 186,931.91 × 78,100.52
  4. Step 4: Simplify right side
    135,464.18x = 14,599,478,050.43
  5. Step 5: Solve for x
    x = 14,599,478,050.43/135,464.18
  6. Step 6: Final answer
    x = 107,773.72

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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.