Home / 87,369,968.90-131,054,953.35-81,984,700.10

Finding the Fourth Proportional to 87,369,968.90, 131,054,953.35 and 81,984,700.10

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Solution

The fourth proportional to 87,369,968.90, 131,054,953.35 and 81,984,700.10 is: 122,977,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369,968.90 : 131,054,953.35 = 81,984,700.10 : x
  2. Step 2: Convert to fraction form
    87,369,968.90/131,054,953.35 = 81,984,700.10/x
  3. Step 3: Cross multiply
    87,369,968.90x = 131,054,953.35 × 81,984,700.10
  4. Step 4: Simplify right side
    87,369,968.90x = 10,744,501,047,019,240
  5. Step 5: Solve for x
    x = 10,744,501,047,019,240/87,369,968.90
  6. Step 6: Final answer
    x = 122,977,050.15

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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.