Home / 156,915.36-216,543.69-85,295.61

Finding the Fourth Proportional to 156,915.36, 216,543.69 and 85,295.61

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Solution

The fourth proportional to 156,915.36, 216,543.69 and 85,295.61 is: 117,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.36 : 216,543.69 = 85,295.61 : x
  2. Step 2: Convert to fraction form
    156,915.36/216,543.69 = 85,295.61/x
  3. Step 3: Cross multiply
    156,915.36x = 216,543.69 × 85,295.61
  4. Step 4: Simplify right side
    156,915.36x = 18,470,226,130.20
  5. Step 5: Solve for x
    x = 18,470,226,130.20/156,915.36
  6. Step 6: Final answer
    x = 117,708.21

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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.