Home / 153,006.10-211,144.18-85,021.31

Finding the Fourth Proportional to 153,006.10, 211,144.18 and 85,021.31

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Solution

The fourth proportional to 153,006.10, 211,144.18 and 85,021.31 is: 117,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,006.10 : 211,144.18 = 85,021.31 : x
  2. Step 2: Convert to fraction form
    153,006.10/211,144.18 = 85,021.31/x
  3. Step 3: Cross multiply
    153,006.10x = 211,144.18 × 85,021.31
  4. Step 4: Simplify right side
    153,006.10x = 17,951,754,782.48
  5. Step 5: Solve for x
    x = 17,951,754,782.48/153,006.10
  6. Step 6: Final answer
    x = 117,327.05

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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.