Home / 120,180.05-180,215.40-64,005.74

Finding the Fourth Proportional to 120,180.05, 180,215.40 and 64,005.74

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Solution

The fourth proportional to 120,180.05, 180,215.40 and 64,005.74 is: 95,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,180.05 : 180,215.40 = 64,005.74 : x
  2. Step 2: Convert to fraction form
    120,180.05/180,215.40 = 64,005.74/x
  3. Step 3: Cross multiply
    120,180.05x = 180,215.40 × 64,005.74
  4. Step 4: Simplify right side
    120,180.05x = 11,534,820,036.40
  5. Step 5: Solve for x
    x = 11,534,820,036.40/120,180.05
  6. Step 6: Final answer
    x = 95,979.49

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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.