Home / 135,474.02-186,947.37-74,220.42

Finding the Fourth Proportional to 135,474.02, 186,947.37 and 74,220.42

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Solution

The fourth proportional to 135,474.02, 186,947.37 and 74,220.42 is: 102,420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,474.02 : 186,947.37 = 74,220.42 : x
  2. Step 2: Convert to fraction form
    135,474.02/186,947.37 = 74,220.42/x
  3. Step 3: Cross multiply
    135,474.02x = 186,947.37 × 74,220.42
  4. Step 4: Simplify right side
    135,474.02x = 13,875,312,319.30
  5. Step 5: Solve for x
    x = 13,875,312,319.30/135,474.02
  6. Step 6: Final answer
    x = 102,420.47

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1.5x scale

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.