Home / 154,329.40-212,973.42-87,263.80

Finding the Fourth Proportional to 154,329.40, 212,973.42 and 87,263.80

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Solution

The fourth proportional to 154,329.40, 212,973.42 and 87,263.80 is: 120,423.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,329.40 : 212,973.42 = 87,263.80 : x
  2. Step 2: Convert to fraction form
    154,329.40/212,973.42 = 87,263.80/x
  3. Step 3: Cross multiply
    154,329.40x = 212,973.42 × 87,263.80
  4. Step 4: Simplify right side
    154,329.40x = 18,584,869,928.20
  5. Step 5: Solve for x
    x = 18,584,869,928.20/154,329.40
  6. Step 6: Final answer
    x = 120,423.39

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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.