Home / 138,425.09-191,026.62-74,762.87

Finding the Fourth Proportional to 138,425.09, 191,026.62 and 74,762.87

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Solution

The fourth proportional to 138,425.09, 191,026.62 and 74,762.87 is: 103,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,425.09 : 191,026.62 = 74,762.87 : x
  2. Step 2: Convert to fraction form
    138,425.09/191,026.62 = 74,762.87/x
  3. Step 3: Cross multiply
    138,425.09x = 191,026.62 × 74,762.87
  4. Step 4: Simplify right side
    138,425.09x = 14,281,697,402.47
  5. Step 5: Solve for x
    x = 14,281,697,402.47/138,425.09
  6. Step 6: Final answer
    x = 103,172.76

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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.