Home / 142,684,658-196,898,238.60-80,805,439.52

Finding the Fourth Proportional to 142,684,658, 196,898,238.60 and 80,805,439.52

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Solution

The fourth proportional to 142,684,658, 196,898,238.60 and 80,805,439.52 is: 111,507,774.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,684,658 : 196,898,238.60 = 80,805,439.52 : x
  2. Step 2: Convert to fraction form
    142,684,658/196,898,238.60 = 80,805,439.52/x
  3. Step 3: Cross multiply
    142,684,658x = 196,898,238.60 × 80,805,439.52
  4. Step 4: Simplify right side
    142,684,658x = 15,910,448,710,786,828
  5. Step 5: Solve for x
    x = 15,910,448,710,786,828/142,684,658
  6. Step 6: Final answer
    x = 111,507,774.79

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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.