Home / 163,521.52-225,678.34-90,931.60

Finding the Fourth Proportional to 163,521.52, 225,678.34 and 90,931.60

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Solution

The fourth proportional to 163,521.52, 225,678.34 and 90,931.60 is: 125,495.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,521.52 : 225,678.34 = 90,931.60 : x
  2. Step 2: Convert to fraction form
    163,521.52/225,678.34 = 90,931.60/x
  3. Step 3: Cross multiply
    163,521.52x = 225,678.34 × 90,931.60
  4. Step 4: Simplify right side
    163,521.52x = 20,521,292,541.54
  5. Step 5: Solve for x
    x = 20,521,292,541.54/163,521.52
  6. Step 6: Final answer
    x = 125,495.97

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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.