Home / 142,132.40-213,172.32-52,155.44

Finding the Fourth Proportional to 142,132.40, 213,172.32 and 52,155.44

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Solution

The fourth proportional to 142,132.40, 213,172.32 and 52,155.44 is: 78,223.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,132.40 : 213,172.32 = 52,155.44 : x
  2. Step 2: Convert to fraction form
    142,132.40/213,172.32 = 52,155.44/x
  3. Step 3: Cross multiply
    142,132.40x = 213,172.32 × 52,155.44
  4. Step 4: Simplify right side
    142,132.40x = 11,118,096,145.42
  5. Step 5: Solve for x
    x = 11,118,096,145.42/142,132.40
  6. Step 6: Final answer
    x = 78,223.52

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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.