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Finding the Fourth Proportional to 157,643.55, 236,503.13 and 45,321.48

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Solution

The fourth proportional to 157,643.55, 236,503.13 and 45,321.48 is: 67,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,643.55 : 236,503.13 = 45,321.48 : x
  2. Step 2: Convert to fraction form
    157,643.55/236,503.13 = 45,321.48/x
  3. Step 3: Cross multiply
    157,643.55x = 236,503.13 × 45,321.48
  4. Step 4: Simplify right side
    157,643.55x = 10,718,671,649.63
  5. Step 5: Solve for x
    x = 10,718,671,649.63/157,643.55
  6. Step 6: Final answer
    x = 67,993.09

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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.