Home / 105,308.81-145,306-59,985.80

Finding the Fourth Proportional to 105,308.81, 145,306 and 59,985.80

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Solution

The fourth proportional to 105,308.81, 145,306 and 59,985.80 is: 82,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,308.81 : 145,306 = 59,985.80 : x
  2. Step 2: Convert to fraction form
    105,308.81/145,306 = 59,985.80/x
  3. Step 3: Cross multiply
    105,308.81x = 145,306 × 59,985.80
  4. Step 4: Simplify right side
    105,308.81x = 8,716,296,654.80
  5. Step 5: Solve for x
    x = 8,716,296,654.80/105,308.81
  6. Step 6: Final answer
    x = 82,768.92

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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.