Home / 122,370.21-183,533.40-77,864.76

Finding the Fourth Proportional to 122,370.21, 183,533.40 and 77,864.76

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Solution

The fourth proportional to 122,370.21, 183,533.40 and 77,864.76 is: 116,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,370.21 : 183,533.40 = 77,864.76 : x
  2. Step 2: Convert to fraction form
    122,370.21/183,533.40 = 77,864.76/x
  3. Step 3: Cross multiply
    122,370.21x = 183,533.40 × 77,864.76
  4. Step 4: Simplify right side
    122,370.21x = 14,290,784,142.98
  5. Step 5: Solve for x
    x = 14,290,784,142.98/122,370.21
  6. Step 6: Final answer
    x = 116,783.20

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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.