Home / 137,256.21-189,420.81-86,250.07

Finding the Fourth Proportional to 137,256.21, 189,420.81 and 86,250.07

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Solution

The fourth proportional to 137,256.21, 189,420.81 and 86,250.07 is: 119,029.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,256.21 : 189,420.81 = 86,250.07 : x
  2. Step 2: Convert to fraction form
    137,256.21/189,420.81 = 86,250.07/x
  3. Step 3: Cross multiply
    137,256.21x = 189,420.81 × 86,250.07
  4. Step 4: Simplify right side
    137,256.21x = 16,337,558,008.82
  5. Step 5: Solve for x
    x = 16,337,558,008.82/137,256.21
  6. Step 6: Final answer
    x = 119,029.65

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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.