Home / 99,662,109.40-149,209,728.90-76,798,336.60

Finding the Fourth Proportional to 99,662,109.40, 149,209,728.90 and 76,798,336.60

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Solution

The fourth proportional to 99,662,109.40, 149,209,728.90 and 76,798,336.60 is: 114,979,093.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662,109.40 : 149,209,728.90 = 76,798,336.60 : x
  2. Step 2: Convert to fraction form
    99,662,109.40/149,209,728.90 = 76,798,336.60/x
  3. Step 3: Cross multiply
    99,662,109.40x = 149,209,728.90 × 76,798,336.60
  4. Step 4: Simplify right side
    99,662,109.40x = 11,459,058,984,056,948
  5. Step 5: Solve for x
    x = 11,459,058,984,056,948/99,662,109.40
  6. Step 6: Final answer
    x = 114,979,093.39

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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.