Home / 137,316.96-189,583.04-105,422.40

Finding the Fourth Proportional to 137,316.96, 189,583.04 and 105,422.40

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Solution

The fourth proportional to 137,316.96, 189,583.04 and 105,422.40 is: 145,548.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,316.96 : 189,583.04 = 105,422.40 : x
  2. Step 2: Convert to fraction form
    137,316.96/189,583.04 = 105,422.40/x
  3. Step 3: Cross multiply
    137,316.96x = 189,583.04 × 105,422.40
  4. Step 4: Simplify right side
    137,316.96x = 19,986,299,076.10
  5. Step 5: Solve for x
    x = 19,986,299,076.10/137,316.96
  6. Step 6: Final answer
    x = 145,548.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.