Home / 153,105.65-211,388.91-136,922.66

Finding the Fourth Proportional to 153,105.65, 211,388.91 and 136,922.66

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Solution

The fourth proportional to 153,105.65, 211,388.91 and 136,922.66 is: 189,045.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,105.65 : 211,388.91 = 136,922.66 : x
  2. Step 2: Convert to fraction form
    153,105.65/211,388.91 = 136,922.66/x
  3. Step 3: Cross multiply
    153,105.65x = 211,388.91 × 136,922.66
  4. Step 4: Simplify right side
    153,105.65x = 28,943,931,851.70
  5. Step 5: Solve for x
    x = 28,943,931,851.70/153,105.65
  6. Step 6: Final answer
    x = 189,045.48

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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.