Home / 156,728.40-216,319.62-103,018.41

Finding the Fourth Proportional to 156,728.40, 216,319.62 and 103,018.41

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Solution

The fourth proportional to 156,728.40, 216,319.62 and 103,018.41 is: 142,188.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,728.40 : 216,319.62 = 103,018.41 : x
  2. Step 2: Convert to fraction form
    156,728.40/216,319.62 = 103,018.41/x
  3. Step 3: Cross multiply
    156,728.40x = 216,319.62 × 103,018.41
  4. Step 4: Simplify right side
    156,728.40x = 22,284,903,304.20
  5. Step 5: Solve for x
    x = 22,284,903,304.20/156,728.40
  6. Step 6: Final answer
    x = 142,188.04

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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.