Home / 161,697,812.40-242,557,216.20-85,170,308.40

Finding the Fourth Proportional to 161,697,812.40, 242,557,216.20 and 85,170,308.40

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Solution

The fourth proportional to 161,697,812.40, 242,557,216.20 and 85,170,308.40 is: 127,760,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,697,812.40 : 242,557,216.20 = 85,170,308.40 : x
  2. Step 2: Convert to fraction form
    161,697,812.40/242,557,216.20 = 85,170,308.40/x
  3. Step 3: Cross multiply
    161,697,812.40x = 242,557,216.20 × 85,170,308.40
  4. Step 4: Simplify right side
    161,697,812.40x = 20,658,672,908,399,476
  5. Step 5: Solve for x
    x = 20,658,672,908,399,476/161,697,812.40
  6. Step 6: Final answer
    x = 127,760,991.95

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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.