Home / 106,871.60-159,438.34-91,190

Finding the Fourth Proportional to 106,871.60, 159,438.34 and 91,190

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Solution

The fourth proportional to 106,871.60, 159,438.34 and 91,190 is: 136,043.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,871.60 : 159,438.34 = 91,190 : x
  2. Step 2: Convert to fraction form
    106,871.60/159,438.34 = 91,190/x
  3. Step 3: Cross multiply
    106,871.60x = 159,438.34 × 91,190
  4. Step 4: Simplify right side
    106,871.60x = 14,539,182,224.60
  5. Step 5: Solve for x
    x = 14,539,182,224.60/106,871.60
  6. Step 6: Final answer
    x = 136,043.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.