Home / 99,743.16-137,651.76-56,725.14

Finding the Fourth Proportional to 99,743.16, 137,651.76 and 56,725.14

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Solution

The fourth proportional to 99,743.16, 137,651.76 and 56,725.14 is: 78,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,743.16 : 137,651.76 = 56,725.14 : x
  2. Step 2: Convert to fraction form
    99,743.16/137,651.76 = 56,725.14/x
  3. Step 3: Cross multiply
    99,743.16x = 137,651.76 × 56,725.14
  4. Step 4: Simplify right side
    99,743.16x = 7,808,315,357.25
  5. Step 5: Solve for x
    x = 7,808,315,357.25/99,743.16
  6. Step 6: Final answer
    x = 78,284.22

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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.