Home / 142,212,127.44-196,252,130.52-79,488,142.32

Finding the Fourth Proportional to 142,212,127.44, 196,252,130.52 and 79,488,142.32

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Solution

The fourth proportional to 142,212,127.44, 196,252,130.52 and 79,488,142.32 is: 109,693,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,212,127.44 : 196,252,130.52 = 79,488,142.32 : x
  2. Step 2: Convert to fraction form
    142,212,127.44/196,252,130.52 = 79,488,142.32/x
  3. Step 3: Cross multiply
    142,212,127.44x = 196,252,130.52 × 79,488,142.32
  4. Step 4: Simplify right side
    142,212,127.44x = 15,599,717,281,376,976
  5. Step 5: Solve for x
    x = 15,599,717,281,376,976/142,212,127.44
  6. Step 6: Final answer
    x = 109,693,298.05

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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.