Home / 136,984.84-189,038.76-76,555.46

Finding the Fourth Proportional to 136,984.84, 189,038.76 and 76,555.46

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Solution

The fourth proportional to 136,984.84, 189,038.76 and 76,555.46 is: 105,646.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,984.84 : 189,038.76 = 76,555.46 : x
  2. Step 2: Convert to fraction form
    136,984.84/189,038.76 = 76,555.46/x
  3. Step 3: Cross multiply
    136,984.84x = 189,038.76 × 76,555.46
  4. Step 4: Simplify right side
    136,984.84x = 14,471,949,229.63
  5. Step 5: Solve for x
    x = 14,471,949,229.63/136,984.84
  6. Step 6: Final answer
    x = 105,646.36

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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.