Home / 157,487.40-217,333.63-85,868.62

Finding the Fourth Proportional to 157,487.40, 217,333.63 and 85,868.62

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Solution

The fourth proportional to 157,487.40, 217,333.63 and 85,868.62 is: 118,499.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,487.40 : 217,333.63 = 85,868.62 : x
  2. Step 2: Convert to fraction form
    157,487.40/217,333.63 = 85,868.62/x
  3. Step 3: Cross multiply
    157,487.40x = 217,333.63 × 85,868.62
  4. Step 4: Simplify right side
    157,487.40x = 18,662,138,451.69
  5. Step 5: Solve for x
    x = 18,662,138,451.69/157,487.40
  6. Step 6: Final answer
    x = 118,499.25

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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.