Home / 149,061.40-205,709.34-81,083.32

Finding the Fourth Proportional to 149,061.40, 205,709.34 and 81,083.32

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Solution

The fourth proportional to 149,061.40, 205,709.34 and 81,083.32 is: 111,897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,061.40 : 205,709.34 = 81,083.32 : x
  2. Step 2: Convert to fraction form
    149,061.40/205,709.34 = 81,083.32/x
  3. Step 3: Cross multiply
    149,061.40x = 205,709.34 × 81,083.32
  4. Step 4: Simplify right side
    149,061.40x = 16,679,596,242.21
  5. Step 5: Solve for x
    x = 16,679,596,242.21/149,061.40
  6. Step 6: Final answer
    x = 111,897.49

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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.