Home / 260,359.06-390,398.10-118,126.71

Finding the Fourth Proportional to 260,359.06, 390,398.10 and 118,126.71

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Solution

The fourth proportional to 260,359.06, 390,398.10 and 118,126.71 is: 177,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,359.06 : 390,398.10 = 118,126.71 : x
  2. Step 2: Convert to fraction form
    260,359.06/390,398.10 = 118,126.71/x
  3. Step 3: Cross multiply
    260,359.06x = 390,398.10 × 118,126.71
  4. Step 4: Simplify right side
    260,359.06x = 46,116,443,143.25
  5. Step 5: Solve for x
    x = 46,116,443,143.25/260,359.06
  6. Step 6: Final answer
    x = 177,126.32

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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.