Home / 99,925.63-137,742.02-68,039.71

Finding the Fourth Proportional to 99,925.63, 137,742.02 and 68,039.71

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Solution

The fourth proportional to 99,925.63, 137,742.02 and 68,039.71 is: 93,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,925.63 : 137,742.02 = 68,039.71 : x
  2. Step 2: Convert to fraction form
    99,925.63/137,742.02 = 68,039.71/x
  3. Step 3: Cross multiply
    99,925.63x = 137,742.02 × 68,039.71
  4. Step 4: Simplify right side
    99,925.63x = 9,371,926,666.21
  5. Step 5: Solve for x
    x = 9,371,926,666.21/99,925.63
  6. Step 6: Final answer
    x = 93,789.02

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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.