Home / 87,372,000.40-131,058,000.60-85,671,389.20

Finding the Fourth Proportional to 87,372,000.40, 131,058,000.60 and 85,671,389.20

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Solution

The fourth proportional to 87,372,000.40, 131,058,000.60 and 85,671,389.20 is: 128,507,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,372,000.40 : 131,058,000.60 = 85,671,389.20 : x
  2. Step 2: Convert to fraction form
    87,372,000.40/131,058,000.60 = 85,671,389.20/x
  3. Step 3: Cross multiply
    87,372,000.40x = 131,058,000.60 × 85,671,389.20
  4. Step 4: Simplify right side
    87,372,000.40x = 11,227,920,977,176,434
  5. Step 5: Solve for x
    x = 11,227,920,977,176,434/87,372,000.40
  6. Step 6: Final answer
    x = 128,507,083.80

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1.5x scale

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.