Home / 99,739.89-137,646.32-57,301.16

Finding the Fourth Proportional to 99,739.89, 137,646.32 and 57,301.16

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Solution

The fourth proportional to 99,739.89, 137,646.32 and 57,301.16 is: 79,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,739.89 : 137,646.32 = 57,301.16 : x
  2. Step 2: Convert to fraction form
    99,739.89/137,646.32 = 57,301.16/x
  3. Step 3: Cross multiply
    99,739.89x = 137,646.32 × 57,301.16
  4. Step 4: Simplify right side
    99,739.89x = 7,887,292,830.99
  5. Step 5: Solve for x
    x = 7,887,292,830.99/99,739.89
  6. Step 6: Final answer
    x = 79,078.62

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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.