Home / 99,848,918.20-149,773,377.30-81,709,065.40

Finding the Fourth Proportional to 99,848,918.20, 149,773,377.30 and 81,709,065.40

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Solution

The fourth proportional to 99,848,918.20, 149,773,377.30 and 81,709,065.40 is: 122,563,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,848,918.20 : 149,773,377.30 = 81,709,065.40 : x
  2. Step 2: Convert to fraction form
    99,848,918.20/149,773,377.30 = 81,709,065.40/x
  3. Step 3: Cross multiply
    99,848,918.20x = 149,773,377.30 × 81,709,065.40
  4. Step 4: Simplify right side
    99,848,918.20x = 12,237,842,680,984,578
  5. Step 5: Solve for x
    x = 12,237,842,680,984,578/99,848,918.20
  6. Step 6: Final answer
    x = 122,563,598.10

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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.