Home / 105,431.11-145,490.65-63,013.03

Finding the Fourth Proportional to 105,431.11, 145,490.65 and 63,013.03

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Solution

The fourth proportional to 105,431.11, 145,490.65 and 63,013.03 is: 86,955.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,431.11 : 145,490.65 = 63,013.03 : x
  2. Step 2: Convert to fraction form
    105,431.11/145,490.65 = 63,013.03/x
  3. Step 3: Cross multiply
    105,431.11x = 145,490.65 × 63,013.03
  4. Step 4: Simplify right side
    105,431.11x = 9,167,806,693.17
  5. Step 5: Solve for x
    x = 9,167,806,693.17/105,431.11
  6. Step 6: Final answer
    x = 86,955.42

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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.