Home / 126,478.48-189,815.64-47,664.40

Finding the Fourth Proportional to 126,478.48, 189,815.64 and 47,664.40

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Solution

The fourth proportional to 126,478.48, 189,815.64 and 47,664.40 is: 71,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,478.48 : 189,815.64 = 47,664.40 : x
  2. Step 2: Convert to fraction form
    126,478.48/189,815.64 = 47,664.40/x
  3. Step 3: Cross multiply
    126,478.48x = 189,815.64 × 47,664.40
  4. Step 4: Simplify right side
    126,478.48x = 9,047,448,591.22
  5. Step 5: Solve for x
    x = 9,047,448,591.22/126,478.48
  6. Step 6: Final answer
    x = 71,533.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.