Home / 153,914.08-212,399.76-86,844.64

Finding the Fourth Proportional to 153,914.08, 212,399.76 and 86,844.64

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Solution

The fourth proportional to 153,914.08, 212,399.76 and 86,844.64 is: 119,844.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,914.08 : 212,399.76 = 86,844.64 : x
  2. Step 2: Convert to fraction form
    153,914.08/212,399.76 = 86,844.64/x
  3. Step 3: Cross multiply
    153,914.08x = 212,399.76 × 86,844.64
  4. Step 4: Simplify right side
    153,914.08x = 18,445,780,693.29
  5. Step 5: Solve for x
    x = 18,445,780,693.29/153,914.08
  6. Step 6: Final answer
    x = 119,844.66

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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.