Home / 99,588.30-149,382.45-91,985.10

Finding the Fourth Proportional to 99,588.30, 149,382.45 and 91,985.10

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Solution

The fourth proportional to 99,588.30, 149,382.45 and 91,985.10 is: 137,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,588.30 : 149,382.45 = 91,985.10 : x
  2. Step 2: Convert to fraction form
    99,588.30/149,382.45 = 91,985.10/x
  3. Step 3: Cross multiply
    99,588.30x = 149,382.45 × 91,985.10
  4. Step 4: Simplify right side
    99,588.30x = 13,740,959,601.50
  5. Step 5: Solve for x
    x = 13,740,959,601.50/99,588.30
  6. Step 6: Final answer
    x = 137,977.65

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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.