Home / 103,435.13-142,742.37-57,499.08

Finding the Fourth Proportional to 103,435.13, 142,742.37 and 57,499.08

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Solution

The fourth proportional to 103,435.13, 142,742.37 and 57,499.08 is: 79,349.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,435.13 : 142,742.37 = 57,499.08 : x
  2. Step 2: Convert to fraction form
    103,435.13/142,742.37 = 57,499.08/x
  3. Step 3: Cross multiply
    103,435.13x = 142,742.37 × 57,499.08
  4. Step 4: Simplify right side
    103,435.13x = 8,207,554,952.02
  5. Step 5: Solve for x
    x = 8,207,554,952.02/103,435.13
  6. Step 6: Final answer
    x = 79,349.79

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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.