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Finding the Fourth Proportional to 157,415.03, 217,237.29 and 85,799.69

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Solution

The fourth proportional to 157,415.03, 217,237.29 and 85,799.69 is: 118,406.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,415.03 : 217,237.29 = 85,799.69 : x
  2. Step 2: Convert to fraction form
    157,415.03/217,237.29 = 85,799.69/x
  3. Step 3: Cross multiply
    157,415.03x = 217,237.29 × 85,799.69
  4. Step 4: Simplify right side
    157,415.03x = 18,638,892,027.77
  5. Step 5: Solve for x
    x = 18,638,892,027.77/157,415.03
  6. Step 6: Final answer
    x = 118,406.05

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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.