Home / 81,653,189.40-122,353,812.90-70,819,666.20

Finding the Fourth Proportional to 81,653,189.40, 122,353,812.90 and 70,819,666.20

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Solution

The fourth proportional to 81,653,189.40, 122,353,812.90 and 70,819,666.20 is: 106,120,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653,189.40 : 122,353,812.90 = 70,819,666.20 : x
  2. Step 2: Convert to fraction form
    81,653,189.40/122,353,812.90 = 70,819,666.20/x
  3. Step 3: Cross multiply
    81,653,189.40x = 122,353,812.90 × 70,819,666.20
  4. Step 4: Simplify right side
    81,653,189.40x = 8,665,056,187,875,255
  5. Step 5: Solve for x
    x = 8,665,056,187,875,255/81,653,189.40
  6. Step 6: Final answer
    x = 106,120,241.62

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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.