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Finding the Fourth Proportional to 111,062.56, 153,283.44 and 87,368.80

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Solution

The fourth proportional to 111,062.56, 153,283.44 and 87,368.80 is: 120,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,062.56 : 153,283.44 = 87,368.80 : x
  2. Step 2: Convert to fraction form
    111,062.56/153,283.44 = 87,368.80/x
  3. Step 3: Cross multiply
    111,062.56x = 153,283.44 × 87,368.80
  4. Step 4: Simplify right side
    111,062.56x = 13,392,190,212.67
  5. Step 5: Solve for x
    x = 13,392,190,212.67/111,062.56
  6. Step 6: Final answer
    x = 120,582.40

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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.