Home / 120,061.16-179,966.58-45,129.68

Finding the Fourth Proportional to 120,061.16, 179,966.58 and 45,129.68

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Solution

The fourth proportional to 120,061.16, 179,966.58 and 45,129.68 is: 67,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,061.16 : 179,966.58 = 45,129.68 : x
  2. Step 2: Convert to fraction form
    120,061.16/179,966.58 = 45,129.68/x
  3. Step 3: Cross multiply
    120,061.16x = 179,966.58 × 45,129.68
  4. Step 4: Simplify right side
    120,061.16x = 8,121,834,166.09
  5. Step 5: Solve for x
    x = 8,121,834,166.09/120,061.16
  6. Step 6: Final answer
    x = 67,647.47

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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.