Home / 121,969.56-168,337.08-76,653.72

Finding the Fourth Proportional to 121,969.56, 168,337.08 and 76,653.72

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Solution

The fourth proportional to 121,969.56, 168,337.08 and 76,653.72 is: 105,794.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,969.56 : 168,337.08 = 76,653.72 : x
  2. Step 2: Convert to fraction form
    121,969.56/168,337.08 = 76,653.72/x
  3. Step 3: Cross multiply
    121,969.56x = 168,337.08 × 76,653.72
  4. Step 4: Simplify right side
    121,969.56x = 12,903,663,395.94
  5. Step 5: Solve for x
    x = 12,903,663,395.94/121,969.56
  6. Step 6: Final answer
    x = 105,794.13

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1.5x scale

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.