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Finding the Fourth Proportional to 156,038.25, 215,361.99 and 88,970.25

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Solution

The fourth proportional to 156,038.25, 215,361.99 and 88,970.25 is: 122,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,038.25 : 215,361.99 = 88,970.25 : x
  2. Step 2: Convert to fraction form
    156,038.25/215,361.99 = 88,970.25/x
  3. Step 3: Cross multiply
    156,038.25x = 215,361.99 × 88,970.25
  4. Step 4: Simplify right side
    156,038.25x = 19,160,810,090.80
  5. Step 5: Solve for x
    x = 19,160,810,090.80/156,038.25
  6. Step 6: Final answer
    x = 122,795.60

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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.