Home / 137,113.28-189,185.60-86,783.04

Finding the Fourth Proportional to 137,113.28, 189,185.60 and 86,783.04

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Solution

The fourth proportional to 137,113.28, 189,185.60 and 86,783.04 is: 119,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,113.28 : 189,185.60 = 86,783.04 : x
  2. Step 2: Convert to fraction form
    137,113.28/189,185.60 = 86,783.04/x
  3. Step 3: Cross multiply
    137,113.28x = 189,185.60 × 86,783.04
  4. Step 4: Simplify right side
    137,113.28x = 16,418,101,492.22
  5. Step 5: Solve for x
    x = 16,418,101,492.22/137,113.28
  6. Step 6: Final answer
    x = 119,741.15

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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.