Home / 137,489.12-189,715.74-77,055.02

Finding the Fourth Proportional to 137,489.12, 189,715.74 and 77,055.02

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Solution

The fourth proportional to 137,489.12, 189,715.74 and 77,055.02 is: 106,325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,489.12 : 189,715.74 = 77,055.02 : x
  2. Step 2: Convert to fraction form
    137,489.12/189,715.74 = 77,055.02/x
  3. Step 3: Cross multiply
    137,489.12x = 189,715.74 × 77,055.02
  4. Step 4: Simplify right side
    137,489.12x = 14,618,550,140.01
  5. Step 5: Solve for x
    x = 14,618,550,140.01/137,489.12
  6. Step 6: Final answer
    x = 106,325.14

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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.