Home / 109,205.48-163,698.78-69,807.08

Finding the Fourth Proportional to 109,205.48, 163,698.78 and 69,807.08

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Solution

The fourth proportional to 109,205.48, 163,698.78 and 69,807.08 is: 104,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,205.48 : 163,698.78 = 69,807.08 : x
  2. Step 2: Convert to fraction form
    109,205.48/163,698.78 = 69,807.08/x
  3. Step 3: Cross multiply
    109,205.48x = 163,698.78 × 69,807.08
  4. Step 4: Simplify right side
    109,205.48x = 11,427,333,831.36
  5. Step 5: Solve for x
    x = 11,427,333,831.36/109,205.48
  6. Step 6: Final answer
    x = 104,640.66

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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.