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Finding the Fourth Proportional to 105,862.59, 158,673.09 and 42,642.23

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Solution

The fourth proportional to 105,862.59, 158,673.09 and 42,642.23 is: 63,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,862.59 : 158,673.09 = 42,642.23 : x
  2. Step 2: Convert to fraction form
    105,862.59/158,673.09 = 42,642.23/x
  3. Step 3: Cross multiply
    105,862.59x = 158,673.09 × 42,642.23
  4. Step 4: Simplify right side
    105,862.59x = 6,766,173,605.23
  5. Step 5: Solve for x
    x = 6,766,173,605.23/105,862.59
  6. Step 6: Final answer
    x = 63,914.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.