Home / 103,214.12-142,303.59-66,851.37

Finding the Fourth Proportional to 103,214.12, 142,303.59 and 66,851.37

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Solution

The fourth proportional to 103,214.12, 142,303.59 and 66,851.37 is: 92,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,214.12 : 142,303.59 = 66,851.37 : x
  2. Step 2: Convert to fraction form
    103,214.12/142,303.59 = 66,851.37/x
  3. Step 3: Cross multiply
    103,214.12x = 142,303.59 × 66,851.37
  4. Step 4: Simplify right side
    103,214.12x = 9,513,189,947.42
  5. Step 5: Solve for x
    x = 9,513,189,947.42/103,214.12
  6. Step 6: Final answer
    x = 92,169.47

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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.