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Finding the Fourth Proportional to 98,076,446.70, 147,114,670.05 and 87,494,865.90

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Solution

The fourth proportional to 98,076,446.70, 147,114,670.05 and 87,494,865.90 is: 131,242,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,076,446.70 : 147,114,670.05 = 87,494,865.90 : x
  2. Step 2: Convert to fraction form
    98,076,446.70/147,114,670.05 = 87,494,865.90/x
  3. Step 3: Cross multiply
    98,076,446.70x = 147,114,670.05 × 87,494,865.90
  4. Step 4: Simplify right side
    98,076,446.70x = 12,871,778,327,947,498
  5. Step 5: Solve for x
    x = 12,871,778,327,947,498/98,076,446.70
  6. Step 6: Final answer
    x = 131,242,298.85

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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.