Home / 153,045.50-211,107.48-105,215.82

Finding the Fourth Proportional to 153,045.50, 211,107.48 and 105,215.82

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Solution

The fourth proportional to 153,045.50, 211,107.48 and 105,215.82 is: 145,132.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,045.50 : 211,107.48 = 105,215.82 : x
  2. Step 2: Convert to fraction form
    153,045.50/211,107.48 = 105,215.82/x
  3. Step 3: Cross multiply
    153,045.50x = 211,107.48 × 105,215.82
  4. Step 4: Simplify right side
    153,045.50x = 22,211,846,616.33
  5. Step 5: Solve for x
    x = 22,211,846,616.33/153,045.50
  6. Step 6: Final answer
    x = 145,132.31

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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.