Home / 153,631.22-211,890.90-99,933.39

Finding the Fourth Proportional to 153,631.22, 211,890.90 and 99,933.39

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Solution

The fourth proportional to 153,631.22, 211,890.90 and 99,933.39 is: 137,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,631.22 : 211,890.90 = 99,933.39 : x
  2. Step 2: Convert to fraction form
    153,631.22/211,890.90 = 99,933.39/x
  3. Step 3: Cross multiply
    153,631.22x = 211,890.90 × 99,933.39
  4. Step 4: Simplify right side
    153,631.22x = 21,174,975,947.15
  5. Step 5: Solve for x
    x = 21,174,975,947.15/153,631.22
  6. Step 6: Final answer
    x = 137,829.90

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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.