Home / 261,074.40-391,611.60-121,106.40

Finding the Fourth Proportional to 261,074.40, 391,611.60 and 121,106.40

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Solution

The fourth proportional to 261,074.40, 391,611.60 and 121,106.40 is: 181,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,074.40 : 391,611.60 = 121,106.40 : x
  2. Step 2: Convert to fraction form
    261,074.40/391,611.60 = 121,106.40/x
  3. Step 3: Cross multiply
    261,074.40x = 391,611.60 × 121,106.40
  4. Step 4: Simplify right side
    261,074.40x = 47,426,671,074.24
  5. Step 5: Solve for x
    x = 47,426,671,074.24/261,074.40
  6. Step 6: Final answer
    x = 181,659.60

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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.