Home / 106,931.41-160,604.71-78,740.12

Finding the Fourth Proportional to 106,931.41, 160,604.71 and 78,740.12

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Solution

The fourth proportional to 106,931.41, 160,604.71 and 78,740.12 is: 118,263.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,931.41 : 160,604.71 = 78,740.12 : x
  2. Step 2: Convert to fraction form
    106,931.41/160,604.71 = 78,740.12/x
  3. Step 3: Cross multiply
    106,931.41x = 160,604.71 × 78,740.12
  4. Step 4: Simplify right side
    106,931.41x = 12,646,034,137.97
  5. Step 5: Solve for x
    x = 12,646,034,137.97/106,931.41
  6. Step 6: Final answer
    x = 118,263.04

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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.