Home / 142,572,019.36-196,744,123.92-77,380,523.68

Finding the Fourth Proportional to 142,572,019.36, 196,744,123.92 and 77,380,523.68

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Solution

The fourth proportional to 142,572,019.36, 196,744,123.92 and 77,380,523.68 is: 106,782,266.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,572,019.36 : 196,744,123.92 = 77,380,523.68 : x
  2. Step 2: Convert to fraction form
    142,572,019.36/196,744,123.92 = 77,380,523.68/x
  3. Step 3: Cross multiply
    142,572,019.36x = 196,744,123.92 × 77,380,523.68
  4. Step 4: Simplify right side
    142,572,019.36x = 15,224,163,339,892,414
  5. Step 5: Solve for x
    x = 15,224,163,339,892,414/142,572,019.36
  6. Step 6: Final answer
    x = 106,782,266.31

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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.