Home / 210,144,028.80-315,216,043.20-129,522,460.80

Finding the Fourth Proportional to 210,144,028.80, 315,216,043.20 and 129,522,460.80

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Solution

The fourth proportional to 210,144,028.80, 315,216,043.20 and 129,522,460.80 is: 194,283,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,144,028.80 : 315,216,043.20 = 129,522,460.80 : x
  2. Step 2: Convert to fraction form
    210,144,028.80/315,216,043.20 = 129,522,460.80/x
  3. Step 3: Cross multiply
    210,144,028.80x = 315,216,043.20 × 129,522,460.80
  4. Step 4: Simplify right side
    210,144,028.80x = 40,827,557,598,903,104
  5. Step 5: Solve for x
    x = 40,827,557,598,903,104/210,144,028.80
  6. Step 6: Final answer
    x = 194,283,691.20

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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.