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Finding the Fourth Proportional to 105,699.36, 145,870.08 and 63,250.08

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Solution

The fourth proportional to 105,699.36, 145,870.08 and 63,250.08 is: 87,288.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,699.36 : 145,870.08 = 63,250.08 : x
  2. Step 2: Convert to fraction form
    105,699.36/145,870.08 = 63,250.08/x
  3. Step 3: Cross multiply
    105,699.36x = 145,870.08 × 63,250.08
  4. Step 4: Simplify right side
    105,699.36x = 9,226,294,229.61
  5. Step 5: Solve for x
    x = 9,226,294,229.61/105,699.36
  6. Step 6: Final answer
    x = 87,288.08

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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.