Home / 157,484.59-217,329.75-85,865.81

Finding the Fourth Proportional to 157,484.59, 217,329.75 and 85,865.81

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Solution

The fourth proportional to 157,484.59, 217,329.75 and 85,865.81 is: 118,495.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,484.59 : 217,329.75 = 85,865.81 : x
  2. Step 2: Convert to fraction form
    157,484.59/217,329.75 = 85,865.81/x
  3. Step 3: Cross multiply
    157,484.59x = 217,329.75 × 85,865.81
  4. Step 4: Simplify right side
    157,484.59x = 18,661,193,934.20
  5. Step 5: Solve for x
    x = 18,661,193,934.20/157,484.59
  6. Step 6: Final answer
    x = 118,495.37

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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.