Home / 99,218.12-136,944.60-56,801.12

Finding the Fourth Proportional to 99,218.12, 136,944.60 and 56,801.12

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Solution

The fourth proportional to 99,218.12, 136,944.60 and 56,801.12 is: 78,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,218.12 : 136,944.60 = 56,801.12 : x
  2. Step 2: Convert to fraction form
    99,218.12/136,944.60 = 56,801.12/x
  3. Step 3: Cross multiply
    99,218.12x = 136,944.60 × 56,801.12
  4. Step 4: Simplify right side
    99,218.12x = 7,778,606,657.95
  5. Step 5: Solve for x
    x = 7,778,606,657.95/99,218.12
  6. Step 6: Final answer
    x = 78,399.05

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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.