Home / 142,545,810.78-196,713,218.82-77,355,714.78

Finding the Fourth Proportional to 142,545,810.78, 196,713,218.82 and 77,355,714.78

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Solution

The fourth proportional to 142,545,810.78, 196,713,218.82 and 77,355,714.78 is: 106,750,886.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,545,810.78 : 196,713,218.82 = 77,355,714.78 : x
  2. Step 2: Convert to fraction form
    142,545,810.78/196,713,218.82 = 77,355,714.78/x
  3. Step 3: Cross multiply
    142,545,810.78x = 196,713,218.82 × 77,355,714.78
  4. Step 4: Simplify right side
    142,545,810.78x = 15,216,891,648,495,648
  5. Step 5: Solve for x
    x = 15,216,891,648,495,648/142,545,810.78
  6. Step 6: Final answer
    x = 106,750,886.37

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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.