Home / 141,873.81-195,784.56-78,211.60

Finding the Fourth Proportional to 141,873.81, 195,784.56 and 78,211.60

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Solution

The fourth proportional to 141,873.81, 195,784.56 and 78,211.60 is: 107,931.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,873.81 : 195,784.56 = 78,211.60 : x
  2. Step 2: Convert to fraction form
    141,873.81/195,784.56 = 78,211.60/x
  3. Step 3: Cross multiply
    141,873.81x = 195,784.56 × 78,211.60
  4. Step 4: Simplify right side
    141,873.81x = 15,312,623,692.90
  5. Step 5: Solve for x
    x = 15,312,623,692.90/141,873.81
  6. Step 6: Final answer
    x = 107,931.29

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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.