Home / 157,941.60-217,956.16-86,322.13

Finding the Fourth Proportional to 157,941.60, 217,956.16 and 86,322.13

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Solution

The fourth proportional to 157,941.60, 217,956.16 and 86,322.13 is: 119,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,941.60 : 217,956.16 = 86,322.13 : x
  2. Step 2: Convert to fraction form
    157,941.60/217,956.16 = 86,322.13/x
  3. Step 3: Cross multiply
    157,941.60x = 217,956.16 × 86,322.13
  4. Step 4: Simplify right side
    157,941.60x = 18,814,439,977.82
  5. Step 5: Solve for x
    x = 18,814,439,977.82/157,941.60
  6. Step 6: Final answer
    x = 119,122.76

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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.