Home / 121,313.10-182,006.10-86,321.10

Finding the Fourth Proportional to 121,313.10, 182,006.10 and 86,321.10

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Solution

The fourth proportional to 121,313.10, 182,006.10 and 86,321.10 is: 129,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,313.10 : 182,006.10 = 86,321.10 : x
  2. Step 2: Convert to fraction form
    121,313.10/182,006.10 = 86,321.10/x
  3. Step 3: Cross multiply
    121,313.10x = 182,006.10 × 86,321.10
  4. Step 4: Simplify right side
    121,313.10x = 15,710,966,758.71
  5. Step 5: Solve for x
    x = 15,710,966,758.71/121,313.10
  6. Step 6: Final answer
    x = 129,507.59

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1.5x scale

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.