Home / 153,630.72-211,890.21-99,932.89

Finding the Fourth Proportional to 153,630.72, 211,890.21 and 99,932.89

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Solution

The fourth proportional to 153,630.72, 211,890.21 and 99,932.89 is: 137,829.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,630.72 : 211,890.21 = 99,932.89 : x
  2. Step 2: Convert to fraction form
    153,630.72/211,890.21 = 99,932.89/x
  3. Step 3: Cross multiply
    153,630.72x = 211,890.21 × 99,932.89
  4. Step 4: Simplify right side
    153,630.72x = 21,174,801,048.01
  5. Step 5: Solve for x
    x = 21,174,801,048.01/153,630.72
  6. Step 6: Final answer
    x = 137,829.21

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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.