Home / 115,984.78-160,136.12-89,079.21

Finding the Fourth Proportional to 115,984.78, 160,136.12 and 89,079.21

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Solution

The fourth proportional to 115,984.78, 160,136.12 and 89,079.21 is: 122,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,984.78 : 160,136.12 = 89,079.21 : x
  2. Step 2: Convert to fraction form
    115,984.78/160,136.12 = 89,079.21/x
  3. Step 3: Cross multiply
    115,984.78x = 160,136.12 × 89,079.21
  4. Step 4: Simplify right side
    115,984.78x = 14,264,799,284.76
  5. Step 5: Solve for x
    x = 14,264,799,284.76/115,984.78
  6. Step 6: Final answer
    x = 122,988.55

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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.