Home / 236,813.72-326,807.63-129,390.41

Finding the Fourth Proportional to 236,813.72, 326,807.63 and 129,390.41

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Solution

The fourth proportional to 236,813.72, 326,807.63 and 129,390.41 is: 178,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,813.72 : 326,807.63 = 129,390.41 : x
  2. Step 2: Convert to fraction form
    236,813.72/326,807.63 = 129,390.41/x
  3. Step 3: Cross multiply
    236,813.72x = 326,807.63 × 129,390.41
  4. Step 4: Simplify right side
    236,813.72x = 42,285,773,892.11
  5. Step 5: Solve for x
    x = 42,285,773,892.11/236,813.72
  6. Step 6: Final answer
    x = 178,561.34

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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.