Home / 91,963,409.60-137,945,114.40-81,611,998.40

Finding the Fourth Proportional to 91,963,409.60, 137,945,114.40 and 81,611,998.40

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Solution

The fourth proportional to 91,963,409.60, 137,945,114.40 and 81,611,998.40 is: 122,417,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,963,409.60 : 137,945,114.40 = 81,611,998.40 : x
  2. Step 2: Convert to fraction form
    91,963,409.60/137,945,114.40 = 81,611,998.40/x
  3. Step 3: Cross multiply
    91,963,409.60x = 137,945,114.40 × 81,611,998.40
  4. Step 4: Simplify right side
    91,963,409.60x = 11,257,976,455,700,618
  5. Step 5: Solve for x
    x = 11,257,976,455,700,618/91,963,409.60
  6. Step 6: Final answer
    x = 122,417,997.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.