Home / 136,985.24-189,039.02-76,555.86

Finding the Fourth Proportional to 136,985.24, 189,039.02 and 76,555.86

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Solution

The fourth proportional to 136,985.24, 189,039.02 and 76,555.86 is: 105,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.24 : 189,039.02 = 76,555.86 : x
  2. Step 2: Convert to fraction form
    136,985.24/189,039.02 = 76,555.86/x
  3. Step 3: Cross multiply
    136,985.24x = 189,039.02 × 76,555.86
  4. Step 4: Simplify right side
    136,985.24x = 14,472,044,366.88
  5. Step 5: Solve for x
    x = 14,472,044,366.88/136,985.24
  6. Step 6: Final answer
    x = 105,646.75

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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.