Home / 133,131.96-183,745.85-78,681.92

Finding the Fourth Proportional to 133,131.96, 183,745.85 and 78,681.92

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Solution

The fourth proportional to 133,131.96, 183,745.85 and 78,681.92 is: 108,595.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,131.96 : 183,745.85 = 78,681.92 : x
  2. Step 2: Convert to fraction form
    133,131.96/183,745.85 = 78,681.92/x
  3. Step 3: Cross multiply
    133,131.96x = 183,745.85 × 78,681.92
  4. Step 4: Simplify right side
    133,131.96x = 14,457,474,957.89
  5. Step 5: Solve for x
    x = 14,457,474,957.89/133,131.96
  6. Step 6: Final answer
    x = 108,595.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.