Home / 142,539,743.32-196,704,845.82-77,349,647.32

Finding the Fourth Proportional to 142,539,743.32, 196,704,845.82 and 77,349,647.32

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Solution

The fourth proportional to 142,539,743.32, 196,704,845.82 and 77,349,647.32 is: 106,742,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539,743.32 : 196,704,845.82 = 77,349,647.32 : x
  2. Step 2: Convert to fraction form
    142,539,743.32/196,704,845.82 = 77,349,647.32/x
  3. Step 3: Cross multiply
    142,539,743.32x = 196,704,845.82 × 77,349,647.32
  4. Step 4: Simplify right side
    142,539,743.32x = 15,215,050,449,820,212
  5. Step 5: Solve for x
    x = 15,215,050,449,820,212/142,539,743.32
  6. Step 6: Final answer
    x = 106,742,513.32

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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.