Home / 137,554.28-189,822.49-77,124.74

Finding the Fourth Proportional to 137,554.28, 189,822.49 and 77,124.74

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Solution

The fourth proportional to 137,554.28, 189,822.49 and 77,124.74 is: 106,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,554.28 : 189,822.49 = 77,124.74 : x
  2. Step 2: Convert to fraction form
    137,554.28/189,822.49 = 77,124.74/x
  3. Step 3: Cross multiply
    137,554.28x = 189,822.49 × 77,124.74
  4. Step 4: Simplify right side
    137,554.28x = 14,640,009,835.22
  5. Step 5: Solve for x
    x = 14,640,009,835.22/137,554.28
  6. Step 6: Final answer
    x = 106,430.78

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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.