Home / 140,299.12-193,607.88-83,681.20

Finding the Fourth Proportional to 140,299.12, 193,607.88 and 83,681.20

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Solution

The fourth proportional to 140,299.12, 193,607.88 and 83,681.20 is: 115,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,299.12 : 193,607.88 = 83,681.20 : x
  2. Step 2: Convert to fraction form
    140,299.12/193,607.88 = 83,681.20/x
  3. Step 3: Cross multiply
    140,299.12x = 193,607.88 × 83,681.20
  4. Step 4: Simplify right side
    140,299.12x = 16,201,339,727.86
  5. Step 5: Solve for x
    x = 16,201,339,727.86/140,299.12
  6. Step 6: Final answer
    x = 115,477.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.