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Finding the Fourth Proportional to 170,695.64, 235,588.74 and 99,135.56

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Solution

The fourth proportional to 170,695.64, 235,588.74 and 99,135.56 is: 136,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,695.64 : 235,588.74 = 99,135.56 : x
  2. Step 2: Convert to fraction form
    170,695.64/235,588.74 = 99,135.56/x
  3. Step 3: Cross multiply
    170,695.64x = 235,588.74 × 99,135.56
  4. Step 4: Simplify right side
    170,695.64x = 23,355,221,669.59
  5. Step 5: Solve for x
    x = 23,355,221,669.59/170,695.64
  6. Step 6: Final answer
    x = 136,823.77

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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.