Home / 105,330.40-145,357.68-62,892.64

Finding the Fourth Proportional to 105,330.40, 145,357.68 and 62,892.64

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Solution

The fourth proportional to 105,330.40, 145,357.68 and 62,892.64 is: 86,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,330.40 : 145,357.68 = 62,892.64 : x
  2. Step 2: Convert to fraction form
    105,330.40/145,357.68 = 62,892.64/x
  3. Step 3: Cross multiply
    105,330.40x = 145,357.68 × 62,892.64
  4. Step 4: Simplify right side
    105,330.40x = 9,141,928,239.48
  5. Step 5: Solve for x
    x = 9,141,928,239.48/105,330.40
  6. Step 6: Final answer
    x = 86,792.87

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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.