Home / 156,830.41-216,425.62-85,210.72

Finding the Fourth Proportional to 156,830.41, 216,425.62 and 85,210.72

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Solution

The fourth proportional to 156,830.41, 216,425.62 and 85,210.72 is: 117,590.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,830.41 : 216,425.62 = 85,210.72 : x
  2. Step 2: Convert to fraction form
    156,830.41/216,425.62 = 85,210.72/x
  3. Step 3: Cross multiply
    156,830.41x = 216,425.62 × 85,210.72
  4. Step 4: Simplify right side
    156,830.41x = 18,441,782,472.10
  5. Step 5: Solve for x
    x = 18,441,782,472.10/156,830.41
  6. Step 6: Final answer
    x = 117,590.60

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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.