Home / 91,363,794.80-126,112,187.16-81,678,283.80

Finding the Fourth Proportional to 91,363,794.80, 126,112,187.16 and 81,678,283.80

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Solution

The fourth proportional to 91,363,794.80, 126,112,187.16 and 81,678,283.80 is: 112,742,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363,794.80 : 126,112,187.16 = 81,678,283.80 : x
  2. Step 2: Convert to fraction form
    91,363,794.80/126,112,187.16 = 81,678,283.80/x
  3. Step 3: Cross multiply
    91,363,794.80x = 126,112,187.16 × 81,678,283.80
  4. Step 4: Simplify right side
    91,363,794.80x = 10,300,627,013,493,196
  5. Step 5: Solve for x
    x = 10,300,627,013,493,196/91,363,794.80
  6. Step 6: Final answer
    x = 112,742,985.73

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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.