Home / 142,137.40-213,206.10-118,982.20

Finding the Fourth Proportional to 142,137.40, 213,206.10 and 118,982.20

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Solution

The fourth proportional to 142,137.40, 213,206.10 and 118,982.20 is: 178,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,137.40 : 213,206.10 = 118,982.20 : x
  2. Step 2: Convert to fraction form
    142,137.40/213,206.10 = 118,982.20/x
  3. Step 3: Cross multiply
    142,137.40x = 213,206.10 × 118,982.20
  4. Step 4: Simplify right side
    142,137.40x = 25,367,730,831.42
  5. Step 5: Solve for x
    x = 25,367,730,831.42/142,137.40
  6. Step 6: Final answer
    x = 178,473.30

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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.