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Finding the Fourth Proportional to 157,175.58, 216,489.09 and 120,807.48

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Solution

The fourth proportional to 157,175.58, 216,489.09 and 120,807.48 is: 166,396.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,175.58 : 216,489.09 = 120,807.48 : x
  2. Step 2: Convert to fraction form
    157,175.58/216,489.09 = 120,807.48/x
  3. Step 3: Cross multiply
    157,175.58x = 216,489.09 × 120,807.48
  4. Step 4: Simplify right side
    157,175.58x = 26,153,501,410.39
  5. Step 5: Solve for x
    x = 26,153,501,410.39/157,175.58
  6. Step 6: Final answer
    x = 166,396.72

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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.