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Finding the Fourth Proportional to 153,459.60, 229,930.20 and 74,403.60

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Solution

The fourth proportional to 153,459.60, 229,930.20 and 74,403.60 is: 111,479.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,459.60 : 229,930.20 = 74,403.60 : x
  2. Step 2: Convert to fraction form
    153,459.60/229,930.20 = 74,403.60/x
  3. Step 3: Cross multiply
    153,459.60x = 229,930.20 × 74,403.60
  4. Step 4: Simplify right side
    153,459.60x = 17,107,634,628.72
  5. Step 5: Solve for x
    x = 17,107,634,628.72/153,459.60
  6. Step 6: Final answer
    x = 111,479.73

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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.