Home / 138,603.48-191,272.68-74,941.13

Finding the Fourth Proportional to 138,603.48, 191,272.68 and 74,941.13

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Solution

The fourth proportional to 138,603.48, 191,272.68 and 74,941.13 is: 103,418.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,603.48 : 191,272.68 = 74,941.13 : x
  2. Step 2: Convert to fraction form
    138,603.48/191,272.68 = 74,941.13/x
  3. Step 3: Cross multiply
    138,603.48x = 191,272.68 × 74,941.13
  4. Step 4: Simplify right side
    138,603.48x = 14,334,189,820.97
  5. Step 5: Solve for x
    x = 14,334,189,820.97/138,603.48
  6. Step 6: Final answer
    x = 103,418.69

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1.5x scale

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.