Home / 103,839,748.68-143,342,976-64,700,863.12

Finding the Fourth Proportional to 103,839,748.68, 143,342,976 and 64,700,863.12

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Solution

The fourth proportional to 103,839,748.68, 143,342,976 and 64,700,863.12 is: 89,314,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,839,748.68 : 143,342,976 = 64,700,863.12 : x
  2. Step 2: Convert to fraction form
    103,839,748.68/143,342,976 = 64,700,863.12/x
  3. Step 3: Cross multiply
    103,839,748.68x = 143,342,976 × 64,700,863.12
  4. Step 4: Simplify right side
    103,839,748.68x = 9,274,414,269,389,444
  5. Step 5: Solve for x
    x = 9,274,414,269,389,444/103,839,748.68
  6. Step 6: Final answer
    x = 89,314,683.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.