Home / 142,290.18-213,466.05-75,720.56

Finding the Fourth Proportional to 142,290.18, 213,466.05 and 75,720.56

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Solution

The fourth proportional to 142,290.18, 213,466.05 and 75,720.56 is: 113,597.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,290.18 : 213,466.05 = 75,720.56 : x
  2. Step 2: Convert to fraction form
    142,290.18/213,466.05 = 75,720.56/x
  3. Step 3: Cross multiply
    142,290.18x = 213,466.05 × 75,720.56
  4. Step 4: Simplify right side
    142,290.18x = 16,163,767,779.66
  5. Step 5: Solve for x
    x = 16,163,767,779.66/142,290.18
  6. Step 6: Final answer
    x = 113,597.21

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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.