Home / 120,428.76-180,590.86-64,256.34

Finding the Fourth Proportional to 120,428.76, 180,590.86 and 64,256.34

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Solution

The fourth proportional to 120,428.76, 180,590.86 and 64,256.34 is: 96,356.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,428.76 : 180,590.86 = 64,256.34 : x
  2. Step 2: Convert to fraction form
    120,428.76/180,590.86 = 64,256.34/x
  3. Step 3: Cross multiply
    120,428.76x = 180,590.86 × 64,256.34
  4. Step 4: Simplify right side
    120,428.76x = 11,604,107,701.05
  5. Step 5: Solve for x
    x = 11,604,107,701.05/120,428.76
  6. Step 6: Final answer
    x = 96,356.62

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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.