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Finding the Fourth Proportional to 115,157.44, 172,703.35 and 72,973.86

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Solution

The fourth proportional to 115,157.44, 172,703.35 and 72,973.86 is: 109,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,157.44 : 172,703.35 = 72,973.86 : x
  2. Step 2: Convert to fraction form
    115,157.44/172,703.35 = 72,973.86/x
  3. Step 3: Cross multiply
    115,157.44x = 172,703.35 × 72,973.86
  4. Step 4: Simplify right side
    115,157.44x = 12,602,830,084.43
  5. Step 5: Solve for x
    x = 12,602,830,084.43/115,157.44
  6. Step 6: Final answer
    x = 109,440.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.