Home / 137,573.28-189,848.88-77,143.86

Finding the Fourth Proportional to 137,573.28, 189,848.88 and 77,143.86

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Solution

The fourth proportional to 137,573.28, 189,848.88 and 77,143.86 is: 106,457.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,573.28 : 189,848.88 = 77,143.86 : x
  2. Step 2: Convert to fraction form
    137,573.28/189,848.88 = 77,143.86/x
  3. Step 3: Cross multiply
    137,573.28x = 189,848.88 × 77,143.86
  4. Step 4: Simplify right side
    137,573.28x = 14,645,675,419.88
  5. Step 5: Solve for x
    x = 14,645,675,419.88/137,573.28
  6. Step 6: Final answer
    x = 106,457.27

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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.