Home / 115,985.18-160,136.31-89,079.41

Finding the Fourth Proportional to 115,985.18, 160,136.31 and 89,079.41

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Solution

The fourth proportional to 115,985.18, 160,136.31 and 89,079.41 is: 122,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,985.18 : 160,136.31 = 89,079.41 : x
  2. Step 2: Convert to fraction form
    115,985.18/160,136.31 = 89,079.41/x
  3. Step 3: Cross multiply
    115,985.18x = 160,136.31 × 89,079.41
  4. Step 4: Simplify right side
    115,985.18x = 14,264,847,213.70
  5. Step 5: Solve for x
    x = 14,264,847,213.70/115,985.18
  6. Step 6: Final answer
    x = 122,988.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.