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Finding the Fourth Proportional to 120,045.76, 180,107.52 and 57,708.16

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Solution

The fourth proportional to 120,045.76, 180,107.52 and 57,708.16 is: 86,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,045.76 : 180,107.52 = 57,708.16 : x
  2. Step 2: Convert to fraction form
    120,045.76/180,107.52 = 57,708.16/x
  3. Step 3: Cross multiply
    120,045.76x = 180,107.52 × 57,708.16
  4. Step 4: Simplify right side
    120,045.76x = 10,393,673,581.36
  5. Step 5: Solve for x
    x = 10,393,673,581.36/120,045.76
  6. Step 6: Final answer
    x = 86,580.93

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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.