Home / 136,979.95-189,033.02-76,551.60

Finding the Fourth Proportional to 136,979.95, 189,033.02 and 76,551.60

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Solution

The fourth proportional to 136,979.95, 189,033.02 and 76,551.60 is: 105,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,979.95 : 189,033.02 = 76,551.60 : x
  2. Step 2: Convert to fraction form
    136,979.95/189,033.02 = 76,551.60/x
  3. Step 3: Cross multiply
    136,979.95x = 189,033.02 × 76,551.60
  4. Step 4: Simplify right side
    136,979.95x = 14,470,780,114.31
  5. Step 5: Solve for x
    x = 14,470,780,114.31/136,979.95
  6. Step 6: Final answer
    x = 105,641.60

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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.