Home / 173-259.50-87.50

Finding the Fourth Proportional to 173, 259.50 and 87.50

Calculator

Solution

The fourth proportional to 173, 259.50 and 87.50 is: 131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    173 : 259.50 = 87.50 : x
  2. Step 2: Convert to fraction form
    173/259.50 = 87.50/x
  3. Step 3: Cross multiply
    173x = 259.50 × 87.50
  4. Step 4: Simplify right side
    173x = 22,706.25
  5. Step 5: Solve for x
    x = 22,706.25/173
  6. Step 6: Final answer
    x = 131.25

Related Problems

Find fourth proportional to 86.50, 129.75 and 43.75
Half scale
Find fourth proportional to 346, 519 and 175
Double scale
Find fourth proportional to 174, 261 and 88.50
Similar ratio
Find fourth proportional to 259.50, 389.25 and 131.25
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.