Home / 147,958.12-221,938.80-42,778

Finding the Fourth Proportional to 147,958.12, 221,938.80 and 42,778

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Solution

The fourth proportional to 147,958.12, 221,938.80 and 42,778 is: 64,167.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,958.12 : 221,938.80 = 42,778 : x
  2. Step 2: Convert to fraction form
    147,958.12/221,938.80 = 42,778/x
  3. Step 3: Cross multiply
    147,958.12x = 221,938.80 × 42,778
  4. Step 4: Simplify right side
    147,958.12x = 9,494,097,986.40
  5. Step 5: Solve for x
    x = 9,494,097,986.40/147,958.12
  6. Step 6: Final answer
    x = 64,167.47

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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.