Home / 145,820.78-219,518.94-131,156.57

Finding the Fourth Proportional to 145,820.78, 219,518.94 and 131,156.57

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Solution

The fourth proportional to 145,820.78, 219,518.94 and 131,156.57 is: 197,443.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,820.78 : 219,518.94 = 131,156.57 : x
  2. Step 2: Convert to fraction form
    145,820.78/219,518.94 = 131,156.57/x
  3. Step 3: Cross multiply
    145,820.78x = 219,518.94 × 131,156.57
  4. Step 4: Simplify right side
    145,820.78x = 28,791,352,261.07
  5. Step 5: Solve for x
    x = 28,791,352,261.07/145,820.78
  6. Step 6: Final answer
    x = 197,443.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.