Home / 120,237.14-165,980.40-71,856.14

Finding the Fourth Proportional to 120,237.14, 165,980.40 and 71,856.14

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Solution

The fourth proportional to 120,237.14, 165,980.40 and 71,856.14 is: 99,193.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,237.14 : 165,980.40 = 71,856.14 : x
  2. Step 2: Convert to fraction form
    120,237.14/165,980.40 = 71,856.14/x
  3. Step 3: Cross multiply
    120,237.14x = 165,980.40 × 71,856.14
  4. Step 4: Simplify right side
    120,237.14x = 11,926,710,859.66
  5. Step 5: Solve for x
    x = 11,926,710,859.66/120,237.14
  6. Step 6: Final answer
    x = 99,193.23

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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.