Home / 160,558.47-221,360.63-138,138.29

Finding the Fourth Proportional to 160,558.47, 221,360.63 and 138,138.29

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Solution

The fourth proportional to 160,558.47, 221,360.63 and 138,138.29 is: 190,450.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,558.47 : 221,360.63 = 138,138.29 : x
  2. Step 2: Convert to fraction form
    160,558.47/221,360.63 = 138,138.29/x
  3. Step 3: Cross multiply
    160,558.47x = 221,360.63 × 138,138.29
  4. Step 4: Simplify right side
    160,558.47x = 30,578,377,934.13
  5. Step 5: Solve for x
    x = 30,578,377,934.13/160,558.47
  6. Step 6: Final answer
    x = 190,450.11

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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.