Home / 99,870,103.45-149,805,155.16-28,066,519.45

Finding the Fourth Proportional to 99,870,103.45, 149,805,155.16 and 28,066,519.45

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Solution

The fourth proportional to 99,870,103.45, 149,805,155.16 and 28,066,519.45 is: 42,099,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,870,103.45 : 149,805,155.16 = 28,066,519.45 : x
  2. Step 2: Convert to fraction form
    99,870,103.45/149,805,155.16 = 28,066,519.45/x
  3. Step 3: Cross multiply
    99,870,103.45x = 149,805,155.16 × 28,066,519.45
  4. Step 4: Simplify right side
    99,870,103.45x = 4,204,509,301,008,407.50
  5. Step 5: Solve for x
    x = 4,204,509,301,008,407.50/99,870,103.45
  6. Step 6: Final answer
    x = 42,099,779.17

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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.