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Finding the Fourth Proportional to 157,998.60, 236,997.90 and 145,038.60

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Solution

The fourth proportional to 157,998.60, 236,997.90 and 145,038.60 is: 217,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,998.60 : 236,997.90 = 145,038.60 : x
  2. Step 2: Convert to fraction form
    157,998.60/236,997.90 = 145,038.60/x
  3. Step 3: Cross multiply
    157,998.60x = 236,997.90 × 145,038.60
  4. Step 4: Simplify right side
    157,998.60x = 34,373,843,618.94
  5. Step 5: Solve for x
    x = 34,373,843,618.94/157,998.60
  6. Step 6: Final answer
    x = 217,557.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.