Home / 260,046.02-390,181.72-91,686.60

Finding the Fourth Proportional to 260,046.02, 390,181.72 and 91,686.60

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Solution

The fourth proportional to 260,046.02, 390,181.72 and 91,686.60 is: 137,569.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,046.02 : 390,181.72 = 91,686.60 : x
  2. Step 2: Convert to fraction form
    260,046.02/390,181.72 = 91,686.60/x
  3. Step 3: Cross multiply
    260,046.02x = 390,181.72 × 91,686.60
  4. Step 4: Simplify right side
    260,046.02x = 35,774,435,288.95
  5. Step 5: Solve for x
    x = 35,774,435,288.95/260,046.02
  6. Step 6: Final answer
    x = 137,569.63

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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.