Home / 136,987.36-189,041.94-76,557.96

Finding the Fourth Proportional to 136,987.36, 189,041.94 and 76,557.96

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Solution

The fourth proportional to 136,987.36, 189,041.94 and 76,557.96 is: 105,649.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,987.36 : 189,041.94 = 76,557.96 : x
  2. Step 2: Convert to fraction form
    136,987.36/189,041.94 = 76,557.96/x
  3. Step 3: Cross multiply
    136,987.36x = 189,041.94 × 76,557.96
  4. Step 4: Simplify right side
    136,987.36x = 14,472,665,280.84
  5. Step 5: Solve for x
    x = 14,472,665,280.84/136,987.36
  6. Step 6: Final answer
    x = 105,649.64

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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.