Home / 155,056.37-213,988.41-86,154.14

Finding the Fourth Proportional to 155,056.37, 213,988.41 and 86,154.14

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Solution

The fourth proportional to 155,056.37, 213,988.41 and 86,154.14 is: 118,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,056.37 : 213,988.41 = 86,154.14 : x
  2. Step 2: Convert to fraction form
    155,056.37/213,988.41 = 86,154.14/x
  3. Step 3: Cross multiply
    155,056.37x = 213,988.41 × 86,154.14
  4. Step 4: Simplify right side
    155,056.37x = 18,435,987,968.49
  5. Step 5: Solve for x
    x = 18,435,987,968.49/155,056.37
  6. Step 6: Final answer
    x = 118,898.62

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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.