Home / 92,780,633.16-128,314,724.94-81,158,020.92

Finding the Fourth Proportional to 92,780,633.16, 128,314,724.94 and 81,158,020.92

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Solution

The fourth proportional to 92,780,633.16, 128,314,724.94 and 81,158,020.92 is: 112,240,763.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,780,633.16 : 128,314,724.94 = 81,158,020.92 : x
  2. Step 2: Convert to fraction form
    92,780,633.16/128,314,724.94 = 81,158,020.92/x
  3. Step 3: Cross multiply
    92,780,633.16x = 128,314,724.94 × 81,158,020.92
  4. Step 4: Simplify right side
    92,780,633.16x = 10,413,769,131,024,566
  5. Step 5: Solve for x
    x = 10,413,769,131,024,566/92,780,633.16
  6. Step 6: Final answer
    x = 112,240,763.79

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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.