Home / 137,213.84-189,353.76-76,784.60

Finding the Fourth Proportional to 137,213.84, 189,353.76 and 76,784.60

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Solution

The fourth proportional to 137,213.84, 189,353.76 and 76,784.60 is: 105,962.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,213.84 : 189,353.76 = 76,784.60 : x
  2. Step 2: Convert to fraction form
    137,213.84/189,353.76 = 76,784.60/x
  3. Step 3: Cross multiply
    137,213.84x = 189,353.76 × 76,784.60
  4. Step 4: Simplify right side
    137,213.84x = 14,539,452,720.10
  5. Step 5: Solve for x
    x = 14,539,452,720.10/137,213.84
  6. Step 6: Final answer
    x = 105,962.00

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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.