Home / 145,620.18-200,924.55-85,188.51

Finding the Fourth Proportional to 145,620.18, 200,924.55 and 85,188.51

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Solution

The fourth proportional to 145,620.18, 200,924.55 and 85,188.51 is: 117,541.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,620.18 : 200,924.55 = 85,188.51 : x
  2. Step 2: Convert to fraction form
    145,620.18/200,924.55 = 85,188.51/x
  3. Step 3: Cross multiply
    145,620.18x = 200,924.55 × 85,188.51
  4. Step 4: Simplify right side
    145,620.18x = 17,116,463,036.92
  5. Step 5: Solve for x
    x = 17,116,463,036.92/145,620.18
  6. Step 6: Final answer
    x = 117,541.83

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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.