Home / 99,651.06-137,501.55-57,208.68

Finding the Fourth Proportional to 99,651.06, 137,501.55 and 57,208.68

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Solution

The fourth proportional to 99,651.06, 137,501.55 and 57,208.68 is: 78,938.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651.06 : 137,501.55 = 57,208.68 : x
  2. Step 2: Convert to fraction form
    99,651.06/137,501.55 = 57,208.68/x
  3. Step 3: Cross multiply
    99,651.06x = 137,501.55 × 57,208.68
  4. Step 4: Simplify right side
    99,651.06x = 7,866,282,173.45
  5. Step 5: Solve for x
    x = 7,866,282,173.45/99,651.06
  6. Step 6: Final answer
    x = 78,938.27

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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.