Home / 157,140.82-216,850.16-85,519.30

Finding the Fourth Proportional to 157,140.82, 216,850.16 and 85,519.30

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Solution

The fourth proportional to 157,140.82, 216,850.16 and 85,519.30 is: 118,014.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,140.82 : 216,850.16 = 85,519.30 : x
  2. Step 2: Convert to fraction form
    157,140.82/216,850.16 = 85,519.30/x
  3. Step 3: Cross multiply
    157,140.82x = 216,850.16 × 85,519.30
  4. Step 4: Simplify right side
    157,140.82x = 18,544,873,888.09
  5. Step 5: Solve for x
    x = 18,544,873,888.09/157,140.82
  6. Step 6: Final answer
    x = 118,014.36

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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.