Home / 161,438.85-242,158.47-77,179.20

Finding the Fourth Proportional to 161,438.85, 242,158.47 and 77,179.20

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Solution

The fourth proportional to 161,438.85, 242,158.47 and 77,179.20 is: 115,768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,438.85 : 242,158.47 = 77,179.20 : x
  2. Step 2: Convert to fraction form
    161,438.85/242,158.47 = 77,179.20/x
  3. Step 3: Cross multiply
    161,438.85x = 242,158.47 × 77,179.20
  4. Step 4: Simplify right side
    161,438.85x = 18,689,596,987.82
  5. Step 5: Solve for x
    x = 18,689,596,987.82/161,438.85
  6. Step 6: Final answer
    x = 115,768.89

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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.