Home / 142,019,926.80-213,029,890.20-81,553,750.80

Finding the Fourth Proportional to 142,019,926.80, 213,029,890.20 and 81,553,750.80

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Solution

The fourth proportional to 142,019,926.80, 213,029,890.20 and 81,553,750.80 is: 122,330,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019,926.80 : 213,029,890.20 = 81,553,750.80 : x
  2. Step 2: Convert to fraction form
    142,019,926.80/213,029,890.20 = 81,553,750.80/x
  3. Step 3: Cross multiply
    142,019,926.80x = 213,029,890.20 × 81,553,750.80
  4. Step 4: Simplify right side
    142,019,926.80x = 17,373,386,578,322,160
  5. Step 5: Solve for x
    x = 17,373,386,578,322,160/142,019,926.80
  6. Step 6: Final answer
    x = 122,330,626.20

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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.