Home / 101,106.31-139,539.07-58,085.72

Finding the Fourth Proportional to 101,106.31, 139,539.07 and 58,085.72

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Solution

The fourth proportional to 101,106.31, 139,539.07 and 58,085.72 is: 80,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,106.31 : 139,539.07 = 58,085.72 : x
  2. Step 2: Convert to fraction form
    101,106.31/139,539.07 = 58,085.72/x
  3. Step 3: Cross multiply
    101,106.31x = 139,539.07 × 58,085.72
  4. Step 4: Simplify right side
    101,106.31x = 8,105,227,625.32
  5. Step 5: Solve for x
    x = 8,105,227,625.32/101,106.31
  6. Step 6: Final answer
    x = 80,165.40

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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.