Home / 137,534.30-189,810.78-77,105.06

Finding the Fourth Proportional to 137,534.30, 189,810.78 and 77,105.06

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Solution

The fourth proportional to 137,534.30, 189,810.78 and 77,105.06 is: 106,412.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,534.30 : 189,810.78 = 77,105.06 : x
  2. Step 2: Convert to fraction form
    137,534.30/189,810.78 = 77,105.06/x
  3. Step 3: Cross multiply
    137,534.30x = 189,810.78 × 77,105.06
  4. Step 4: Simplify right side
    137,534.30x = 14,635,371,580.55
  5. Step 5: Solve for x
    x = 14,635,371,580.55/137,534.30
  6. Step 6: Final answer
    x = 106,412.52

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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.