Home / 100,890,979.20-151,336,468.80-28,118,991.60

Finding the Fourth Proportional to 100,890,979.20, 151,336,468.80 and 28,118,991.60

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Solution

The fourth proportional to 100,890,979.20, 151,336,468.80 and 28,118,991.60 is: 42,178,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,890,979.20 : 151,336,468.80 = 28,118,991.60 : x
  2. Step 2: Convert to fraction form
    100,890,979.20/151,336,468.80 = 28,118,991.60/x
  3. Step 3: Cross multiply
    100,890,979.20x = 151,336,468.80 × 28,118,991.60
  4. Step 4: Simplify right side
    100,890,979.20x = 4,255,428,894,960,862.50
  5. Step 5: Solve for x
    x = 4,255,428,894,960,862.50/100,890,979.20
  6. Step 6: Final answer
    x = 42,178,487.40

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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.