Home / 142,539,756.45-196,704,863.94-77,349,660.45

Finding the Fourth Proportional to 142,539,756.45, 196,704,863.94 and 77,349,660.45

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Solution

The fourth proportional to 142,539,756.45, 196,704,863.94 and 77,349,660.45 is: 106,742,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,756.45 : 196,704,863.94 = 77,349,660.45 : x
  2. Step 2: Convert to fraction form
    142,539,756.45/196,704,863.94 = 77,349,660.45/x
  3. Step 3: Cross multiply
    142,539,756.45x = 196,704,863.94 × 77,349,660.45
  4. Step 4: Simplify right side
    142,539,756.45x = 15,215,054,434,622,450
  5. Step 5: Solve for x
    x = 15,215,054,434,622,450/142,539,756.45
  6. Step 6: Final answer
    x = 106,742,531.44

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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.