Home / 90,989,193.20-136,483,789.80-56,551,816.40

Finding the Fourth Proportional to 90,989,193.20, 136,483,789.80 and 56,551,816.40

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Solution

The fourth proportional to 90,989,193.20, 136,483,789.80 and 56,551,816.40 is: 84,827,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989,193.20 : 136,483,789.80 = 56,551,816.40 : x
  2. Step 2: Convert to fraction form
    90,989,193.20/136,483,789.80 = 56,551,816.40/x
  3. Step 3: Cross multiply
    90,989,193.20x = 136,483,789.80 × 56,551,816.40
  4. Step 4: Simplify right side
    90,989,193.20x = 7,718,406,222,345,793
  5. Step 5: Solve for x
    x = 7,718,406,222,345,793/90,989,193.20
  6. Step 6: Final answer
    x = 84,827,724.60

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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.