Home / 115,985.20-160,136.67-89,079.63

Finding the Fourth Proportional to 115,985.20, 160,136.67 and 89,079.63

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Solution

The fourth proportional to 115,985.20, 160,136.67 and 89,079.63 is: 122,989.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,985.20 : 160,136.67 = 89,079.63 : x
  2. Step 2: Convert to fraction form
    115,985.20/160,136.67 = 89,079.63/x
  3. Step 3: Cross multiply
    115,985.20x = 160,136.67 × 89,079.63
  4. Step 4: Simplify right side
    115,985.20x = 14,264,914,512.35
  5. Step 5: Solve for x
    x = 14,264,914,512.35/115,985.20
  6. Step 6: Final answer
    x = 122,989.09

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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.