Home / 136,985.36-189,039.24-76,555.98

Finding the Fourth Proportional to 136,985.36, 189,039.24 and 76,555.98

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Solution

The fourth proportional to 136,985.36, 189,039.24 and 76,555.98 is: 105,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.36 : 189,039.24 = 76,555.98 : x
  2. Step 2: Convert to fraction form
    136,985.36/189,039.24 = 76,555.98/x
  3. Step 3: Cross multiply
    136,985.36x = 189,039.24 × 76,555.98
  4. Step 4: Simplify right side
    136,985.36x = 14,472,084,276.66
  5. Step 5: Solve for x
    x = 14,472,084,276.66/136,985.36
  6. Step 6: Final answer
    x = 105,646.94

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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.