Home / 138,967.45-208,730.10-82,916.93

Finding the Fourth Proportional to 138,967.45, 208,730.10 and 82,916.93

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Solution

The fourth proportional to 138,967.45, 208,730.10 and 82,916.93 is: 124,541.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,967.45 : 208,730.10 = 82,916.93 : x
  2. Step 2: Convert to fraction form
    138,967.45/208,730.10 = 82,916.93/x
  3. Step 3: Cross multiply
    138,967.45x = 208,730.10 × 82,916.93
  4. Step 4: Simplify right side
    138,967.45x = 17,307,259,090.59
  5. Step 5: Solve for x
    x = 17,307,259,090.59/138,967.45
  6. Step 6: Final answer
    x = 124,541.82

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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.