Home / 137,328.64-189,529.70-76,887.61

Finding the Fourth Proportional to 137,328.64, 189,529.70 and 76,887.61

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Solution

The fourth proportional to 137,328.64, 189,529.70 and 76,887.61 is: 106,113.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,328.64 : 189,529.70 = 76,887.61 : x
  2. Step 2: Convert to fraction form
    137,328.64/189,529.70 = 76,887.61/x
  3. Step 3: Cross multiply
    137,328.64x = 189,529.70 × 76,887.61
  4. Step 4: Simplify right side
    137,328.64x = 14,572,485,657.02
  5. Step 5: Solve for x
    x = 14,572,485,657.02/137,328.64
  6. Step 6: Final answer
    x = 106,113.96

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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.