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Finding the Fourth Proportional to 157,277.92, 217,041.36 and 90,208.48

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Solution

The fourth proportional to 157,277.92, 217,041.36 and 90,208.48 is: 124,486.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,277.92 : 217,041.36 = 90,208.48 : x
  2. Step 2: Convert to fraction form
    157,277.92/217,041.36 = 90,208.48/x
  3. Step 3: Cross multiply
    157,277.92x = 217,041.36 × 90,208.48
  4. Step 4: Simplify right side
    157,277.92x = 19,578,971,182.73
  5. Step 5: Solve for x
    x = 19,578,971,182.73/157,277.92
  6. Step 6: Final answer
    x = 124,486.46

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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.