Home / 137,248.55-189,403.94-76,824.78

Finding the Fourth Proportional to 137,248.55, 189,403.94 and 76,824.78

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Solution

The fourth proportional to 137,248.55, 189,403.94 and 76,824.78 is: 106,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,248.55 : 189,403.94 = 76,824.78 : x
  2. Step 2: Convert to fraction form
    137,248.55/189,403.94 = 76,824.78/x
  3. Step 3: Cross multiply
    137,248.55x = 189,403.94 × 76,824.78
  4. Step 4: Simplify right side
    137,248.55x = 14,550,915,637.51
  5. Step 5: Solve for x
    x = 14,550,915,637.51/137,248.55
  6. Step 6: Final answer
    x = 106,018.72

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1.5x scale

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.