Home / 99,772.20-149,658.30-91,607.40

Finding the Fourth Proportional to 99,772.20, 149,658.30 and 91,607.40

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Solution

The fourth proportional to 99,772.20, 149,658.30 and 91,607.40 is: 137,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,772.20 : 149,658.30 = 91,607.40 : x
  2. Step 2: Convert to fraction form
    99,772.20/149,658.30 = 91,607.40/x
  3. Step 3: Cross multiply
    99,772.20x = 149,658.30 × 91,607.40
  4. Step 4: Simplify right side
    99,772.20x = 13,709,807,751.42
  5. Step 5: Solve for x
    x = 13,709,807,751.42/99,772.20
  6. Step 6: Final answer
    x = 137,411.10

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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.