Home / 163,421.10-225,496.56-91,787.40

Finding the Fourth Proportional to 163,421.10, 225,496.56 and 91,787.40

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Solution

The fourth proportional to 163,421.10, 225,496.56 and 91,787.40 is: 126,652.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,421.10 : 225,496.56 = 91,787.40 : x
  2. Step 2: Convert to fraction form
    163,421.10/225,496.56 = 91,787.40/x
  3. Step 3: Cross multiply
    163,421.10x = 225,496.56 × 91,787.40
  4. Step 4: Simplify right side
    163,421.10x = 20,697,742,951.34
  5. Step 5: Solve for x
    x = 20,697,742,951.34/163,421.10
  6. Step 6: Final answer
    x = 126,652.82

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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.