Home / 126,300.25-189,302.75-70,113.49

Finding the Fourth Proportional to 126,300.25, 189,302.75 and 70,113.49

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Solution

The fourth proportional to 126,300.25, 189,302.75 and 70,113.49 is: 105,088.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,300.25 : 189,302.75 = 70,113.49 : x
  2. Step 2: Convert to fraction form
    126,300.25/189,302.75 = 70,113.49/x
  3. Step 3: Cross multiply
    126,300.25x = 189,302.75 × 70,113.49
  4. Step 4: Simplify right side
    126,300.25x = 13,272,676,469.10
  5. Step 5: Solve for x
    x = 13,272,676,469.10/126,300.25
  6. Step 6: Final answer
    x = 105,088.28

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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.