Home / 208,051.40-312,033.90-89,726.60

Finding the Fourth Proportional to 208,051.40, 312,033.90 and 89,726.60

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Solution

The fourth proportional to 208,051.40, 312,033.90 and 89,726.60 is: 134,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,051.40 : 312,033.90 = 89,726.60 : x
  2. Step 2: Convert to fraction form
    208,051.40/312,033.90 = 89,726.60/x
  3. Step 3: Cross multiply
    208,051.40x = 312,033.90 × 89,726.60
  4. Step 4: Simplify right side
    208,051.40x = 27,997,740,931.74
  5. Step 5: Solve for x
    x = 27,997,740,931.74/208,051.40
  6. Step 6: Final answer
    x = 134,571.27

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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.