Home / 163,431.48-245,022.66-84,495.36

Finding the Fourth Proportional to 163,431.48, 245,022.66 and 84,495.36

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Solution

The fourth proportional to 163,431.48, 245,022.66 and 84,495.36 is: 126,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,431.48 : 245,022.66 = 84,495.36 : x
  2. Step 2: Convert to fraction form
    163,431.48/245,022.66 = 84,495.36/x
  3. Step 3: Cross multiply
    163,431.48x = 245,022.66 × 84,495.36
  4. Step 4: Simplify right side
    163,431.48x = 20,703,277,864.86
  5. Step 5: Solve for x
    x = 20,703,277,864.86/163,431.48
  6. Step 6: Final answer
    x = 126,678.64

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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.