Home / 154,843.10-213,685.80-86,875.10

Finding the Fourth Proportional to 154,843.10, 213,685.80 and 86,875.10

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Solution

The fourth proportional to 154,843.10, 213,685.80 and 86,875.10 is: 119,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,843.10 : 213,685.80 = 86,875.10 : x
  2. Step 2: Convert to fraction form
    154,843.10/213,685.80 = 86,875.10/x
  3. Step 3: Cross multiply
    154,843.10x = 213,685.80 × 86,875.10
  4. Step 4: Simplify right side
    154,843.10x = 18,563,975,243.58
  5. Step 5: Solve for x
    x = 18,563,975,243.58/154,843.10
  6. Step 6: Final answer
    x = 119,888.94

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1.5x scale

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.