Home / 137,158.02-189,285.20-76,729.67

Finding the Fourth Proportional to 137,158.02, 189,285.20 and 76,729.67

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Solution

The fourth proportional to 137,158.02, 189,285.20 and 76,729.67 is: 105,890.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,158.02 : 189,285.20 = 76,729.67 : x
  2. Step 2: Convert to fraction form
    137,158.02/189,285.20 = 76,729.67/x
  3. Step 3: Cross multiply
    137,158.02x = 189,285.20 × 76,729.67
  4. Step 4: Simplify right side
    137,158.02x = 14,523,789,601.81
  5. Step 5: Solve for x
    x = 14,523,789,601.81/137,158.02
  6. Step 6: Final answer
    x = 105,890.92

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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.