Home / 99,684.12-148,890.71-90,181.84

Finding the Fourth Proportional to 99,684.12, 148,890.71 and 90,181.84

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Solution

The fourth proportional to 99,684.12, 148,890.71 and 90,181.84 is: 134,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,684.12 : 148,890.71 = 90,181.84 : x
  2. Step 2: Convert to fraction form
    99,684.12/148,890.71 = 90,181.84/x
  3. Step 3: Cross multiply
    99,684.12x = 148,890.71 × 90,181.84
  4. Step 4: Simplify right side
    99,684.12x = 13,427,238,186.71
  5. Step 5: Solve for x
    x = 13,427,238,186.71/99,684.12
  6. Step 6: Final answer
    x = 134,697.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.