Home / 100,894.07-139,233.81-58,477.21

Finding the Fourth Proportional to 100,894.07, 139,233.81 and 58,477.21

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Solution

The fourth proportional to 100,894.07, 139,233.81 and 58,477.21 is: 80,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,894.07 : 139,233.81 = 58,477.21 : x
  2. Step 2: Convert to fraction form
    100,894.07/139,233.81 = 58,477.21/x
  3. Step 3: Cross multiply
    100,894.07x = 139,233.81 × 58,477.21
  4. Step 4: Simplify right side
    100,894.07x = 8,142,004,746.47
  5. Step 5: Solve for x
    x = 8,142,004,746.47/100,894.07
  6. Step 6: Final answer
    x = 80,698.55

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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.