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Finding the Fourth Proportional to 110,802.40, 166,009.20 and 90,973.60

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Solution

The fourth proportional to 110,802.40, 166,009.20 and 90,973.60 is: 136,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,802.40 : 166,009.20 = 90,973.60 : x
  2. Step 2: Convert to fraction form
    110,802.40/166,009.20 = 90,973.60/x
  3. Step 3: Cross multiply
    110,802.40x = 166,009.20 × 90,973.60
  4. Step 4: Simplify right side
    110,802.40x = 15,102,454,557.12
  5. Step 5: Solve for x
    x = 15,102,454,557.12/110,802.40
  6. Step 6: Final answer
    x = 136,300.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.