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Finding the Fourth Proportional to 153,180.58, 211,302.92 and 91,910.92

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Solution

The fourth proportional to 153,180.58, 211,302.92 and 91,910.92 is: 126,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,180.58 : 211,302.92 = 91,910.92 : x
  2. Step 2: Convert to fraction form
    153,180.58/211,302.92 = 91,910.92/x
  3. Step 3: Cross multiply
    153,180.58x = 211,302.92 × 91,910.92
  4. Step 4: Simplify right side
    153,180.58x = 19,421,045,775.89
  5. Step 5: Solve for x
    x = 19,421,045,775.89/153,180.58
  6. Step 6: Final answer
    x = 126,785.30

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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.