Home / 99,869.08-137,629.86-71,525.56

Finding the Fourth Proportional to 99,869.08, 137,629.86 and 71,525.56

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Solution

The fourth proportional to 99,869.08, 137,629.86 and 71,525.56 is: 98,569.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,869.08 : 137,629.86 = 71,525.56 : x
  2. Step 2: Convert to fraction form
    99,869.08/137,629.86 = 71,525.56/x
  3. Step 3: Cross multiply
    99,869.08x = 137,629.86 × 71,525.56
  4. Step 4: Simplify right side
    99,869.08x = 9,844,052,809.22
  5. Step 5: Solve for x
    x = 9,844,052,809.22/99,869.08
  6. Step 6: Final answer
    x = 98,569.58

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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.