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Finding the Fourth Proportional to 121,990,710.80, 183,127,783.80 and 73,523,291.60

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Solution

The fourth proportional to 121,990,710.80, 183,127,783.80 and 73,523,291.60 is: 110,370,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,990,710.80 : 183,127,783.80 = 73,523,291.60 : x
  2. Step 2: Convert to fraction form
    121,990,710.80/183,127,783.80 = 73,523,291.60/x
  3. Step 3: Cross multiply
    121,990,710.80x = 183,127,783.80 × 73,523,291.60
  4. Step 4: Simplify right side
    121,990,710.80x = 13,464,157,448,389,156
  5. Step 5: Solve for x
    x = 13,464,157,448,389,156/121,990,710.80
  6. Step 6: Final answer
    x = 110,370,350.01

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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.