Home / 149,096.70-205,748.76-81,111.93

Finding the Fourth Proportional to 149,096.70, 205,748.76 and 81,111.93

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Solution

The fourth proportional to 149,096.70, 205,748.76 and 81,111.93 is: 111,931.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,096.70 : 205,748.76 = 81,111.93 : x
  2. Step 2: Convert to fraction form
    149,096.70/205,748.76 = 81,111.93/x
  3. Step 3: Cross multiply
    149,096.70x = 205,748.76 × 81,111.93
  4. Step 4: Simplify right side
    149,096.70x = 16,688,679,252.40
  5. Step 5: Solve for x
    x = 16,688,679,252.40/149,096.70
  6. Step 6: Final answer
    x = 111,931.92

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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.