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Finding the Fourth Proportional to 157,437.51, 217,266.03 and 85,817.54

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Solution

The fourth proportional to 157,437.51, 217,266.03 and 85,817.54 is: 118,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,437.51 : 217,266.03 = 85,817.54 : x
  2. Step 2: Convert to fraction form
    157,437.51/217,266.03 = 85,817.54/x
  3. Step 3: Cross multiply
    157,437.51x = 217,266.03 × 85,817.54
  4. Step 4: Simplify right side
    157,437.51x = 18,645,235,133.84
  5. Step 5: Solve for x
    x = 18,645,235,133.84/157,437.51
  6. Step 6: Final answer
    x = 118,429.43

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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.