Home / 260,049.02-390,186.22-91,689.60

Finding the Fourth Proportional to 260,049.02, 390,186.22 and 91,689.60

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Solution

The fourth proportional to 260,049.02, 390,186.22 and 91,689.60 is: 137,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,049.02 : 390,186.22 = 91,689.60 : x
  2. Step 2: Convert to fraction form
    260,049.02/390,186.22 = 91,689.60/x
  3. Step 3: Cross multiply
    260,049.02x = 390,186.22 × 91,689.60
  4. Step 4: Simplify right side
    260,049.02x = 35,776,018,437.31
  5. Step 5: Solve for x
    x = 35,776,018,437.31/260,049.02
  6. Step 6: Final answer
    x = 137,574.13

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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.