Home / 91,007.79-136,511.69-90,876.37

Finding the Fourth Proportional to 91,007.79, 136,511.69 and 90,876.37

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Solution

The fourth proportional to 91,007.79, 136,511.69 and 90,876.37 is: 136,314.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,007.79 : 136,511.69 = 90,876.37 : x
  2. Step 2: Convert to fraction form
    91,007.79/136,511.69 = 90,876.37/x
  3. Step 3: Cross multiply
    91,007.79x = 136,511.69 × 90,876.37
  4. Step 4: Simplify right side
    91,007.79x = 12,405,686,849.77
  5. Step 5: Solve for x
    x = 12,405,686,849.77/91,007.79
  6. Step 6: Final answer
    x = 136,314.56

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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.