Home / 91,363,712.64-126,112,072.64-81,678,200.80

Finding the Fourth Proportional to 91,363,712.64, 126,112,072.64 and 81,678,200.80

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Solution

The fourth proportional to 91,363,712.64, 126,112,072.64 and 81,678,200.80 is: 112,742,870.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363,712.64 : 126,112,072.64 = 81,678,200.80 : x
  2. Step 2: Convert to fraction form
    91,363,712.64/126,112,072.64 = 81,678,200.80/x
  3. Step 3: Cross multiply
    91,363,712.64x = 126,112,072.64 × 81,678,200.80
  4. Step 4: Simplify right side
    91,363,712.64x = 10,300,607,192,394,106
  5. Step 5: Solve for x
    x = 10,300,607,192,394,106/91,363,712.64
  6. Step 6: Final answer
    x = 112,742,870.17

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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.