Home / 142,343.67-196,434.30-77,813.19

Finding the Fourth Proportional to 142,343.67, 196,434.30 and 77,813.19

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Solution

The fourth proportional to 142,343.67, 196,434.30 and 77,813.19 is: 107,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,343.67 : 196,434.30 = 77,813.19 : x
  2. Step 2: Convert to fraction form
    142,343.67/196,434.30 = 77,813.19/x
  3. Step 3: Cross multiply
    142,343.67x = 196,434.30 × 77,813.19
  4. Step 4: Simplify right side
    142,343.67x = 15,285,178,526.25
  5. Step 5: Solve for x
    x = 15,285,178,526.25/142,343.67
  6. Step 6: Final answer
    x = 107,382.22

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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.