Home / 186,699,621.40-280,049,432.10-78,980,248.60

Finding the Fourth Proportional to 186,699,621.40, 280,049,432.10 and 78,980,248.60

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Solution

The fourth proportional to 186,699,621.40, 280,049,432.10 and 78,980,248.60 is: 118,470,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,699,621.40 : 280,049,432.10 = 78,980,248.60 : x
  2. Step 2: Convert to fraction form
    186,699,621.40/280,049,432.10 = 78,980,248.60/x
  3. Step 3: Cross multiply
    186,699,621.40x = 280,049,432.10 × 78,980,248.60
  4. Step 4: Simplify right side
    186,699,621.40x = 22,118,373,767,546,820
  5. Step 5: Solve for x
    x = 22,118,373,767,546,820/186,699,621.40
  6. Step 6: Final answer
    x = 118,470,372.90

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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.