Home / 145,731.54-201,111.88-81,200.86

Finding the Fourth Proportional to 145,731.54, 201,111.88 and 81,200.86

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Solution

The fourth proportional to 145,731.54, 201,111.88 and 81,200.86 is: 112,058.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,731.54 : 201,111.88 = 81,200.86 : x
  2. Step 2: Convert to fraction form
    145,731.54/201,111.88 = 81,200.86/x
  3. Step 3: Cross multiply
    145,731.54x = 201,111.88 × 81,200.86
  4. Step 4: Simplify right side
    145,731.54x = 16,330,457,612.22
  5. Step 5: Solve for x
    x = 16,330,457,612.22/145,731.54
  6. Step 6: Final answer
    x = 112,058.50

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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.