Home / 132,613.15-183,009.68-72,187.86

Finding the Fourth Proportional to 132,613.15, 183,009.68 and 72,187.86

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Solution

The fourth proportional to 132,613.15, 183,009.68 and 72,187.86 is: 99,621.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,613.15 : 183,009.68 = 72,187.86 : x
  2. Step 2: Convert to fraction form
    132,613.15/183,009.68 = 72,187.86/x
  3. Step 3: Cross multiply
    132,613.15x = 183,009.68 × 72,187.86
  4. Step 4: Simplify right side
    132,613.15x = 13,211,076,725.11
  5. Step 5: Solve for x
    x = 13,211,076,725.11/132,613.15
  6. Step 6: Final answer
    x = 99,621.17

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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.