Home / 137,396-189,606.48-77,780

Finding the Fourth Proportional to 137,396, 189,606.48 and 77,780

Calculator

Solution

The fourth proportional to 137,396, 189,606.48 and 77,780 is: 107,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,396 : 189,606.48 = 77,780 : x
  2. Step 2: Convert to fraction form
    137,396/189,606.48 = 77,780/x
  3. Step 3: Cross multiply
    137,396x = 189,606.48 × 77,780
  4. Step 4: Simplify right side
    137,396x = 14,747,592,014.40
  5. Step 5: Solve for x
    x = 14,747,592,014.40/137,396
  6. Step 6: Final answer
    x = 107,336.40

Related Problems

Find fourth proportional to 68,698, 94,803.24 and 38,890
Half scale
Find fourth proportional to 274,792, 379,212.96 and 155,560
Double scale
Find fourth proportional to 137,397, 189,607.86 and 77,781
Similar ratio
Find fourth proportional to 206,094, 284,409.72 and 116,670
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.