Home / 260,120.95-390,212.70-91,606.47

Finding the Fourth Proportional to 260,120.95, 390,212.70 and 91,606.47

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Solution

The fourth proportional to 260,120.95, 390,212.70 and 91,606.47 is: 137,420.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,120.95 : 390,212.70 = 91,606.47 : x
  2. Step 2: Convert to fraction form
    260,120.95/390,212.70 = 91,606.47/x
  3. Step 3: Cross multiply
    260,120.95x = 390,212.70 × 91,606.47
  4. Step 4: Simplify right side
    260,120.95x = 35,746,007,996.17
  5. Step 5: Solve for x
    x = 35,746,007,996.17/260,120.95
  6. Step 6: Final answer
    x = 137,420.72

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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.