Home / 72,768,334.80-109,152,502.20-66,816,195.60

Finding the Fourth Proportional to 72,768,334.80, 109,152,502.20 and 66,816,195.60

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Solution

The fourth proportional to 72,768,334.80, 109,152,502.20 and 66,816,195.60 is: 100,224,293.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768,334.80 : 109,152,502.20 = 66,816,195.60 : x
  2. Step 2: Convert to fraction form
    72,768,334.80/109,152,502.20 = 66,816,195.60/x
  3. Step 3: Cross multiply
    72,768,334.80x = 109,152,502.20 × 66,816,195.60
  4. Step 4: Simplify right side
    72,768,334.80x = 7,293,154,937,224,631
  5. Step 5: Solve for x
    x = 7,293,154,937,224,631/72,768,334.80
  6. Step 6: Final answer
    x = 100,224,293.40

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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.