Home / 121,232,191.60-181,848,287.40-72,764,772.40

Finding the Fourth Proportional to 121,232,191.60, 181,848,287.40 and 72,764,772.40

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Solution

The fourth proportional to 121,232,191.60, 181,848,287.40 and 72,764,772.40 is: 109,147,158.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,232,191.60 : 181,848,287.40 = 72,764,772.40 : x
  2. Step 2: Convert to fraction form
    121,232,191.60/181,848,287.40 = 72,764,772.40/x
  3. Step 3: Cross multiply
    121,232,191.60x = 181,848,287.40 × 72,764,772.40
  4. Step 4: Simplify right side
    121,232,191.60x = 13,232,149,243,990,790
  5. Step 5: Solve for x
    x = 13,232,149,243,990,790/121,232,191.60
  6. Step 6: Final answer
    x = 109,147,158.60

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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.