Home / 145,678.23-201,051.32-85,268.43

Finding the Fourth Proportional to 145,678.23, 201,051.32 and 85,268.43

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Solution

The fourth proportional to 145,678.23, 201,051.32 and 85,268.43 is: 117,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,678.23 : 201,051.32 = 85,268.43 : x
  2. Step 2: Convert to fraction form
    145,678.23/201,051.32 = 85,268.43/x
  3. Step 3: Cross multiply
    145,678.23x = 201,051.32 × 85,268.43
  4. Step 4: Simplify right side
    145,678.23x = 17,143,329,979.49
  5. Step 5: Solve for x
    x = 17,143,329,979.49/145,678.23
  6. Step 6: Final answer
    x = 117,679.42

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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.