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Finding the Fourth Proportional to 160,005.60, 221,018.40 and 122,739.84

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Solution

The fourth proportional to 160,005.60, 221,018.40 and 122,739.84 is: 169,542.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,005.60 : 221,018.40 = 122,739.84 : x
  2. Step 2: Convert to fraction form
    160,005.60/221,018.40 = 122,739.84/x
  3. Step 3: Cross multiply
    160,005.60x = 221,018.40 × 122,739.84
  4. Step 4: Simplify right side
    160,005.60x = 27,127,763,053.06
  5. Step 5: Solve for x
    x = 27,127,763,053.06/160,005.60
  6. Step 6: Final answer
    x = 169,542.59

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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.