Home / 140,616-210,924-42,120

Finding the Fourth Proportional to 140,616, 210,924 and 42,120

Calculator

Solution

The fourth proportional to 140,616, 210,924 and 42,120 is: 63,180

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,616 : 210,924 = 42,120 : x
  2. Step 2: Convert to fraction form
    140,616/210,924 = 42,120/x
  3. Step 3: Cross multiply
    140,616x = 210,924 × 42,120
  4. Step 4: Simplify right side
    140,616x = 8,884,118,880
  5. Step 5: Solve for x
    x = 8,884,118,880/140,616
  6. Step 6: Final answer
    x = 63,180

Related Problems

Find fourth proportional to 70,308, 105,462 and 21,060
Half scale
Find fourth proportional to 281,232, 421,848 and 84,240
Double scale
Find fourth proportional to 140,617, 210,925.50 and 42,121
Similar ratio
Find fourth proportional to 210,924, 316,386 and 63,180
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.