Home / 142,918,774.40-197,222,216.64-77,728,730.24

Finding the Fourth Proportional to 142,918,774.40, 197,222,216.64 and 77,728,730.24

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Solution

The fourth proportional to 142,918,774.40, 197,222,216.64 and 77,728,730.24 is: 107,262,552.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,918,774.40 : 197,222,216.64 = 77,728,730.24 : x
  2. Step 2: Convert to fraction form
    142,918,774.40/197,222,216.64 = 77,728,730.24/x
  3. Step 3: Cross multiply
    142,918,774.40x = 197,222,216.64 × 77,728,730.24
  4. Step 4: Simplify right side
    142,918,774.40x = 15,329,832,474,545,398
  5. Step 5: Solve for x
    x = 15,329,832,474,545,398/142,918,774.40
  6. Step 6: Final answer
    x = 107,262,552.03

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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.