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Finding the Fourth Proportional to 142,281.81, 213,420.29 and 42,442.29

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Solution

The fourth proportional to 142,281.81, 213,420.29 and 42,442.29 is: 63,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,281.81 : 213,420.29 = 42,442.29 : x
  2. Step 2: Convert to fraction form
    142,281.81/213,420.29 = 42,442.29/x
  3. Step 3: Cross multiply
    142,281.81x = 213,420.29 × 42,442.29
  4. Step 4: Simplify right side
    142,281.81x = 9,058,045,627.85
  5. Step 5: Solve for x
    x = 9,058,045,627.85/142,281.81
  6. Step 6: Final answer
    x = 63,662.71

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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.