Home / 90,813.15-136,187.32-34,638.57

Finding the Fourth Proportional to 90,813.15, 136,187.32 and 34,638.57

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Solution

The fourth proportional to 90,813.15, 136,187.32 and 34,638.57 is: 51,945.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,813.15 : 136,187.32 = 34,638.57 : x
  2. Step 2: Convert to fraction form
    90,813.15/136,187.32 = 34,638.57/x
  3. Step 3: Cross multiply
    90,813.15x = 136,187.32 × 34,638.57
  4. Step 4: Simplify right side
    90,813.15x = 4,717,334,016.93
  5. Step 5: Solve for x
    x = 4,717,334,016.93/90,813.15
  6. Step 6: Final answer
    x = 51,945.49

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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.