Home / 141,312.20-195,010.80-77,654.12

Finding the Fourth Proportional to 141,312.20, 195,010.80 and 77,654.12

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Solution

The fourth proportional to 141,312.20, 195,010.80 and 77,654.12 is: 107,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,312.20 : 195,010.80 = 77,654.12 : x
  2. Step 2: Convert to fraction form
    141,312.20/195,010.80 = 77,654.12/x
  3. Step 3: Cross multiply
    141,312.20x = 195,010.80 × 77,654.12
  4. Step 4: Simplify right side
    141,312.20x = 15,143,392,064.50
  5. Step 5: Solve for x
    x = 15,143,392,064.50/141,312.20
  6. Step 6: Final answer
    x = 107,162.67

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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.