Home / 156,915.48-216,544.13-85,295.50

Finding the Fourth Proportional to 156,915.48, 216,544.13 and 85,295.50

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Solution

The fourth proportional to 156,915.48, 216,544.13 and 85,295.50 is: 117,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.48 : 216,544.13 = 85,295.50 : x
  2. Step 2: Convert to fraction form
    156,915.48/216,544.13 = 85,295.50/x
  3. Step 3: Cross multiply
    156,915.48x = 216,544.13 × 85,295.50
  4. Step 4: Simplify right side
    156,915.48x = 18,470,239,840.42
  5. Step 5: Solve for x
    x = 18,470,239,840.42/156,915.48
  6. Step 6: Final answer
    x = 117,708.21

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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.