Home / 115,915.40-173,881.20-45,785.60

Finding the Fourth Proportional to 115,915.40, 173,881.20 and 45,785.60

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Solution

The fourth proportional to 115,915.40, 173,881.20 and 45,785.60 is: 68,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,915.40 : 173,881.20 = 45,785.60 : x
  2. Step 2: Convert to fraction form
    115,915.40/173,881.20 = 45,785.60/x
  3. Step 3: Cross multiply
    115,915.40x = 173,881.20 × 45,785.60
  4. Step 4: Simplify right side
    115,915.40x = 7,961,255,070.72
  5. Step 5: Solve for x
    x = 7,961,255,070.72/115,915.40
  6. Step 6: Final answer
    x = 68,681.60

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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.