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Finding the Fourth Proportional to 164,959.79, 247,390.32 and 86,030.96

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Solution

The fourth proportional to 164,959.79, 247,390.32 and 86,030.96 is: 129,020.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,959.79 : 247,390.32 = 86,030.96 : x
  2. Step 2: Convert to fraction form
    164,959.79/247,390.32 = 86,030.96/x
  3. Step 3: Cross multiply
    164,959.79x = 247,390.32 × 86,030.96
  4. Step 4: Simplify right side
    164,959.79x = 21,283,226,320.91
  5. Step 5: Solve for x
    x = 21,283,226,320.91/164,959.79
  6. Step 6: Final answer
    x = 129,020.69

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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.