Home / 260,071.46-390,124.19-80,134.82

Finding the Fourth Proportional to 260,071.46, 390,124.19 and 80,134.82

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Solution

The fourth proportional to 260,071.46, 390,124.19 and 80,134.82 is: 120,207.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,071.46 : 390,124.19 = 80,134.82 : x
  2. Step 2: Convert to fraction form
    260,071.46/390,124.19 = 80,134.82/x
  3. Step 3: Cross multiply
    260,071.46x = 390,124.19 × 80,134.82
  4. Step 4: Simplify right side
    260,071.46x = 31,262,529,792.67
  5. Step 5: Solve for x
    x = 31,262,529,792.67/260,071.46
  6. Step 6: Final answer
    x = 120,207.46

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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.