Home / 103,428,997.60-142,733,116.68-57,020,912.32

Finding the Fourth Proportional to 103,428,997.60, 142,733,116.68 and 57,020,912.32

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Solution

The fourth proportional to 103,428,997.60, 142,733,116.68 and 57,020,912.32 is: 78,689,465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428,997.60 : 142,733,116.68 = 57,020,912.32 : x
  2. Step 2: Convert to fraction form
    103,428,997.60/142,733,116.68 = 57,020,912.32/x
  3. Step 3: Cross multiply
    103,428,997.60x = 142,733,116.68 × 57,020,912.32
  4. Step 4: Simplify right side
    103,428,997.60x = 8,138,772,531,370,610
  5. Step 5: Solve for x
    x = 8,138,772,531,370,610/103,428,997.60
  6. Step 6: Final answer
    x = 78,689,465.43

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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.