Home / 142,697.18-213,913.39-52,690.18

Finding the Fourth Proportional to 142,697.18, 213,913.39 and 52,690.18

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Solution

The fourth proportional to 142,697.18, 213,913.39 and 52,690.18 is: 78,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,697.18 : 213,913.39 = 52,690.18 : x
  2. Step 2: Convert to fraction form
    142,697.18/213,913.39 = 52,690.18/x
  3. Step 3: Cross multiply
    142,697.18x = 213,913.39 × 52,690.18
  4. Step 4: Simplify right side
    142,697.18x = 11,271,135,023.51
  5. Step 5: Solve for x
    x = 11,271,135,023.51/142,697.18
  6. Step 6: Final answer
    x = 78,986.39

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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.