Home / 152,405.20-228,607.80-89,419.60

Finding the Fourth Proportional to 152,405.20, 228,607.80 and 89,419.60

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Solution

The fourth proportional to 152,405.20, 228,607.80 and 89,419.60 is: 134,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,405.20 : 228,607.80 = 89,419.60 : x
  2. Step 2: Convert to fraction form
    152,405.20/228,607.80 = 89,419.60/x
  3. Step 3: Cross multiply
    152,405.20x = 228,607.80 × 89,419.60
  4. Step 4: Simplify right side
    152,405.20x = 20,442,018,032.88
  5. Step 5: Solve for x
    x = 20,442,018,032.88/152,405.20
  6. Step 6: Final answer
    x = 134,129.40

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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.