Home / 149,242.86-205,888.58-100,829.22

Finding the Fourth Proportional to 149,242.86, 205,888.58 and 100,829.22

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Solution

The fourth proportional to 149,242.86, 205,888.58 and 100,829.22 is: 139,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,242.86 : 205,888.58 = 100,829.22 : x
  2. Step 2: Convert to fraction form
    149,242.86/205,888.58 = 100,829.22/x
  3. Step 3: Cross multiply
    149,242.86x = 205,888.58 × 100,829.22
  4. Step 4: Simplify right side
    149,242.86x = 20,759,584,928.31
  5. Step 5: Solve for x
    x = 20,759,584,928.31/149,242.86
  6. Step 6: Final answer
    x = 139,099.35

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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.