Home / 260,110.88-390,166.32-73,122.40

Finding the Fourth Proportional to 260,110.88, 390,166.32 and 73,122.40

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Solution

The fourth proportional to 260,110.88, 390,166.32 and 73,122.40 is: 109,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,110.88 : 390,166.32 = 73,122.40 : x
  2. Step 2: Convert to fraction form
    260,110.88/390,166.32 = 73,122.40/x
  3. Step 3: Cross multiply
    260,110.88x = 390,166.32 × 73,122.40
  4. Step 4: Simplify right side
    260,110.88x = 28,529,897,717.57
  5. Step 5: Solve for x
    x = 28,529,897,717.57/260,110.88
  6. Step 6: Final answer
    x = 109,683.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.