Home / 105,303.52-145,235.23-79,548.02

Finding the Fourth Proportional to 105,303.52, 145,235.23 and 79,548.02

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Solution

The fourth proportional to 105,303.52, 145,235.23 and 79,548.02 is: 109,713.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,303.52 : 145,235.23 = 79,548.02 : x
  2. Step 2: Convert to fraction form
    105,303.52/145,235.23 = 79,548.02/x
  3. Step 3: Cross multiply
    105,303.52x = 145,235.23 × 79,548.02
  4. Step 4: Simplify right side
    105,303.52x = 11,553,174,980.74
  5. Step 5: Solve for x
    x = 11,553,174,980.74/105,303.52
  6. Step 6: Final answer
    x = 109,713.09

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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.