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Finding the Fourth Proportional to 111,088.90, 153,292.80 and 65,768.32

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Solution

The fourth proportional to 111,088.90, 153,292.80 and 65,768.32 is: 90,754.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,088.90 : 153,292.80 = 65,768.32 : x
  2. Step 2: Convert to fraction form
    111,088.90/153,292.80 = 65,768.32/x
  3. Step 3: Cross multiply
    111,088.90x = 153,292.80 × 65,768.32
  4. Step 4: Simplify right side
    111,088.90x = 10,081,809,924.10
  5. Step 5: Solve for x
    x = 10,081,809,924.10/111,088.90
  6. Step 6: Final answer
    x = 90,754.43

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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.