Home / 99,639,968.70-149,459,953.05-86,203,040.70

Finding the Fourth Proportional to 99,639,968.70, 149,459,953.05 and 86,203,040.70

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Solution

The fourth proportional to 99,639,968.70, 149,459,953.05 and 86,203,040.70 is: 129,304,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639,968.70 : 149,459,953.05 = 86,203,040.70 : x
  2. Step 2: Convert to fraction form
    99,639,968.70/149,459,953.05 = 86,203,040.70/x
  3. Step 3: Cross multiply
    99,639,968.70x = 149,459,953.05 × 86,203,040.70
  4. Step 4: Simplify right side
    99,639,968.70x = 12,883,902,415,789,240
  5. Step 5: Solve for x
    x = 12,883,902,415,789,240/99,639,968.70
  6. Step 6: Final answer
    x = 129,304,561.05

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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.