Home / 138,812,607.60-208,290,207.60-61,143,936.72

Finding the Fourth Proportional to 138,812,607.60, 208,290,207.60 and 61,143,936.72

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Solution

The fourth proportional to 138,812,607.60, 208,290,207.60 and 61,143,936.72 is: 91,747,309.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812,607.60 : 208,290,207.60 = 61,143,936.72 : x
  2. Step 2: Convert to fraction form
    138,812,607.60/208,290,207.60 = 61,143,936.72/x
  3. Step 3: Cross multiply
    138,812,607.60x = 208,290,207.60 × 61,143,936.72
  4. Step 4: Simplify right side
    138,812,607.60x = 12,735,683,272,890,062
  5. Step 5: Solve for x
    x = 12,735,683,272,890,062/138,812,607.60
  6. Step 6: Final answer
    x = 91,747,309.51

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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.