Home / 137,289.61-189,403.36-83,531.53

Finding the Fourth Proportional to 137,289.61, 189,403.36 and 83,531.53

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Solution

The fourth proportional to 137,289.61, 189,403.36 and 83,531.53 is: 115,239.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,289.61 : 189,403.36 = 83,531.53 : x
  2. Step 2: Convert to fraction form
    137,289.61/189,403.36 = 83,531.53/x
  3. Step 3: Cross multiply
    137,289.61x = 189,403.36 × 83,531.53
  4. Step 4: Simplify right side
    137,289.61x = 15,821,152,447.94
  5. Step 5: Solve for x
    x = 15,821,152,447.94/137,289.61
  6. Step 6: Final answer
    x = 115,239.26

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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.