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Finding the Fourth Proportional to 249,345.80, 344,099.94 and 136,171.88

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Solution

The fourth proportional to 249,345.80, 344,099.94 and 136,171.88 is: 187,918.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,345.80 : 344,099.94 = 136,171.88 : x
  2. Step 2: Convert to fraction form
    249,345.80/344,099.94 = 136,171.88/x
  3. Step 3: Cross multiply
    249,345.80x = 344,099.94 × 136,171.88
  4. Step 4: Simplify right side
    249,345.80x = 46,856,735,737.69
  5. Step 5: Solve for x
    x = 46,856,735,737.69/249,345.80
  6. Step 6: Final answer
    x = 187,918.69

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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.