Home / 160,403.36-221,209.56-137,734.64

Finding the Fourth Proportional to 160,403.36, 221,209.56 and 137,734.64

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Solution

The fourth proportional to 160,403.36, 221,209.56 and 137,734.64 is: 189,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,403.36 : 221,209.56 = 137,734.64 : x
  2. Step 2: Convert to fraction form
    160,403.36/221,209.56 = 137,734.64/x
  3. Step 3: Cross multiply
    160,403.36x = 221,209.56 × 137,734.64
  4. Step 4: Simplify right side
    160,403.36x = 30,468,219,111.16
  5. Step 5: Solve for x
    x = 30,468,219,111.16/160,403.36
  6. Step 6: Final answer
    x = 189,947.51

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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.