Home / 142,092.36-196,089.08-78,430.19

Finding the Fourth Proportional to 142,092.36, 196,089.08 and 78,430.19

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Solution

The fourth proportional to 142,092.36, 196,089.08 and 78,430.19 is: 108,234.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,092.36 : 196,089.08 = 78,430.19 : x
  2. Step 2: Convert to fraction form
    142,092.36/196,089.08 = 78,430.19/x
  3. Step 3: Cross multiply
    142,092.36x = 196,089.08 × 78,430.19
  4. Step 4: Simplify right side
    142,092.36x = 15,379,302,428.73
  5. Step 5: Solve for x
    x = 15,379,302,428.73/142,092.36
  6. Step 6: Final answer
    x = 108,234.55

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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.