Home / 142,093.71-196,087.64-78,430.14

Finding the Fourth Proportional to 142,093.71, 196,087.64 and 78,430.14

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Solution

The fourth proportional to 142,093.71, 196,087.64 and 78,430.14 is: 108,232.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,093.71 : 196,087.64 = 78,430.14 : x
  2. Step 2: Convert to fraction form
    142,093.71/196,087.64 = 78,430.14/x
  3. Step 3: Cross multiply
    142,093.71x = 196,087.64 × 78,430.14
  4. Step 4: Simplify right side
    142,093.71x = 15,379,180,665.32
  5. Step 5: Solve for x
    x = 15,379,180,665.32/142,093.71
  6. Step 6: Final answer
    x = 108,232.66

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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.