Home / 145,739.52-201,110.40-86,112

Finding the Fourth Proportional to 145,739.52, 201,110.40 and 86,112

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Solution

The fourth proportional to 145,739.52, 201,110.40 and 86,112 is: 118,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,739.52 : 201,110.40 = 86,112 : x
  2. Step 2: Convert to fraction form
    145,739.52/201,110.40 = 86,112/x
  3. Step 3: Cross multiply
    145,739.52x = 201,110.40 × 86,112
  4. Step 4: Simplify right side
    145,739.52x = 17,318,018,764.80
  5. Step 5: Solve for x
    x = 17,318,018,764.80/145,739.52
  6. Step 6: Final answer
    x = 118,828.57

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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.