Home / 145,620.18-218,459.43-45,805.50

Finding the Fourth Proportional to 145,620.18, 218,459.43 and 45,805.50

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Solution

The fourth proportional to 145,620.18, 218,459.43 and 45,805.50 is: 68,717.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,620.18 : 218,459.43 = 45,805.50 : x
  2. Step 2: Convert to fraction form
    145,620.18/218,459.43 = 45,805.50/x
  3. Step 3: Cross multiply
    145,620.18x = 218,459.43 × 45,805.50
  4. Step 4: Simplify right side
    145,620.18x = 10,006,643,420.87
  5. Step 5: Solve for x
    x = 10,006,643,420.87/145,620.18
  6. Step 6: Final answer
    x = 68,717.42

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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.