Home / 190,780,040.70-286,207,385.86-81,605,000.70

Finding the Fourth Proportional to 190,780,040.70, 286,207,385.86 and 81,605,000.70

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Solution

The fourth proportional to 190,780,040.70, 286,207,385.86 and 81,605,000.70 is: 122,423,466.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,780,040.70 : 286,207,385.86 = 81,605,000.70 : x
  2. Step 2: Convert to fraction form
    190,780,040.70/286,207,385.86 = 81,605,000.70/x
  3. Step 3: Cross multiply
    190,780,040.70x = 286,207,385.86 × 81,605,000.70
  4. Step 4: Simplify right side
    190,780,040.70x = 23,355,953,923,450,472
  5. Step 5: Solve for x
    x = 23,355,953,923,450,472/190,780,040.70
  6. Step 6: Final answer
    x = 122,423,466.51

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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.