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Finding the Fourth Proportional to 111,200.75, 153,450.95 and 65,254.23

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Solution

The fourth proportional to 111,200.75, 153,450.95 and 65,254.23 is: 90,047.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,200.75 : 153,450.95 = 65,254.23 : x
  2. Step 2: Convert to fraction form
    111,200.75/153,450.95 = 65,254.23/x
  3. Step 3: Cross multiply
    111,200.75x = 153,450.95 × 65,254.23
  4. Step 4: Simplify right side
    111,200.75x = 10,013,323,585.02
  5. Step 5: Solve for x
    x = 10,013,323,585.02/111,200.75
  6. Step 6: Final answer
    x = 90,047.27

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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.