Home / 100,774,477.89-139,068,438.45-56,721,451.21

Finding the Fourth Proportional to 100,774,477.89, 139,068,438.45 and 56,721,451.21

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Solution

The fourth proportional to 100,774,477.89, 139,068,438.45 and 56,721,451.21 is: 78,275,410.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,774,477.89 : 139,068,438.45 = 56,721,451.21 : x
  2. Step 2: Convert to fraction form
    100,774,477.89/139,068,438.45 = 56,721,451.21/x
  3. Step 3: Cross multiply
    100,774,477.89x = 139,068,438.45 × 56,721,451.21
  4. Step 4: Simplify right side
    100,774,477.89x = 7,888,163,646,392,562
  5. Step 5: Solve for x
    x = 7,888,163,646,392,562/100,774,477.89
  6. Step 6: Final answer
    x = 78,275,410.71

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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.