Home / 99,641,387.80-149,462,081.70-61,178,181.40

Finding the Fourth Proportional to 99,641,387.80, 149,462,081.70 and 61,178,181.40

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Solution

The fourth proportional to 99,641,387.80, 149,462,081.70 and 61,178,181.40 is: 91,767,272.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,641,387.80 : 149,462,081.70 = 61,178,181.40 : x
  2. Step 2: Convert to fraction form
    99,641,387.80/149,462,081.70 = 61,178,181.40/x
  3. Step 3: Cross multiply
    99,641,387.80x = 149,462,081.70 × 61,178,181.40
  4. Step 4: Simplify right side
    99,641,387.80x = 9,143,818,346,664,220
  5. Step 5: Solve for x
    x = 9,143,818,346,664,220/99,641,387.80
  6. Step 6: Final answer
    x = 91,767,272.10

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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.