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Finding the Fourth Proportional to 169,875.90, 254,663.19 and 85,525.74

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Solution

The fourth proportional to 169,875.90, 254,663.19 and 85,525.74 is: 128,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,875.90 : 254,663.19 = 85,525.74 : x
  2. Step 2: Convert to fraction form
    169,875.90/254,663.19 = 85,525.74/x
  3. Step 3: Cross multiply
    169,875.90x = 254,663.19 × 85,525.74
  4. Step 4: Simplify right side
    169,875.90x = 21,780,257,775.51
  5. Step 5: Solve for x
    x = 21,780,257,775.51/169,875.90
  6. Step 6: Final answer
    x = 128,212.76

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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.