Home / 133,118.28-183,703.56-72,689.40

Finding the Fourth Proportional to 133,118.28, 183,703.56 and 72,689.40

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Solution

The fourth proportional to 133,118.28, 183,703.56 and 72,689.40 is: 100,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,118.28 : 183,703.56 = 72,689.40 : x
  2. Step 2: Convert to fraction form
    133,118.28/183,703.56 = 72,689.40/x
  3. Step 3: Cross multiply
    133,118.28x = 183,703.56 × 72,689.40
  4. Step 4: Simplify right side
    133,118.28x = 13,353,301,554.26
  5. Step 5: Solve for x
    x = 13,353,301,554.26/133,118.28
  6. Step 6: Final answer
    x = 100,311.55

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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.