Home / 99,538.80-137,358.36-61,812.24

Finding the Fourth Proportional to 99,538.80, 137,358.36 and 61,812.24

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Solution

The fourth proportional to 99,538.80, 137,358.36 and 61,812.24 is: 85,297.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,538.80 : 137,358.36 = 61,812.24 : x
  2. Step 2: Convert to fraction form
    99,538.80/137,358.36 = 61,812.24/x
  3. Step 3: Cross multiply
    99,538.80x = 137,358.36 × 61,812.24
  4. Step 4: Simplify right side
    99,538.80x = 8,490,427,914.33
  5. Step 5: Solve for x
    x = 8,490,427,914.33/99,538.80
  6. Step 6: Final answer
    x = 85,297.67

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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.