Home / 121,002.40-181,503.60-67,639.60

Finding the Fourth Proportional to 121,002.40, 181,503.60 and 67,639.60

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Solution

The fourth proportional to 121,002.40, 181,503.60 and 67,639.60 is: 101,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,002.40 : 181,503.60 = 67,639.60 : x
  2. Step 2: Convert to fraction form
    121,002.40/181,503.60 = 67,639.60/x
  3. Step 3: Cross multiply
    121,002.40x = 181,503.60 × 67,639.60
  4. Step 4: Simplify right side
    121,002.40x = 12,276,830,902.56
  5. Step 5: Solve for x
    x = 12,276,830,902.56/121,002.40
  6. Step 6: Final answer
    x = 101,459.40

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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.