Home / 91,376,280.30-137,064,420.45-87,345,201.90

Finding the Fourth Proportional to 91,376,280.30, 137,064,420.45 and 87,345,201.90

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Solution

The fourth proportional to 91,376,280.30, 137,064,420.45 and 87,345,201.90 is: 131,017,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,376,280.30 : 137,064,420.45 = 87,345,201.90 : x
  2. Step 2: Convert to fraction form
    91,376,280.30/137,064,420.45 = 87,345,201.90/x
  3. Step 3: Cross multiply
    91,376,280.30x = 137,064,420.45 × 87,345,201.90
  4. Step 4: Simplify right side
    91,376,280.30x = 11,971,919,477,511,738
  5. Step 5: Solve for x
    x = 11,971,919,477,511,738/91,376,280.30
  6. Step 6: Final answer
    x = 131,017,802.85

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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.