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Finding the Fourth Proportional to 141,503.56, 195,270.12 and 77,840.80

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Solution

The fourth proportional to 141,503.56, 195,270.12 and 77,840.80 is: 107,417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,503.56 : 195,270.12 = 77,840.80 : x
  2. Step 2: Convert to fraction form
    141,503.56/195,270.12 = 77,840.80/x
  3. Step 3: Cross multiply
    141,503.56x = 195,270.12 × 77,840.80
  4. Step 4: Simplify right side
    141,503.56x = 15,199,982,356.90
  5. Step 5: Solve for x
    x = 15,199,982,356.90/141,503.56
  6. Step 6: Final answer
    x = 107,417.67

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1.5x scale

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.