Home / 105,602.20-145,731.02-63,170.76

Finding the Fourth Proportional to 105,602.20, 145,731.02 and 63,170.76

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Solution

The fourth proportional to 105,602.20, 145,731.02 and 63,170.76 is: 87,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,602.20 : 145,731.02 = 63,170.76 : x
  2. Step 2: Convert to fraction form
    105,602.20/145,731.02 = 63,170.76/x
  3. Step 3: Cross multiply
    105,602.20x = 145,731.02 × 63,170.76
  4. Step 4: Simplify right side
    105,602.20x = 9,205,939,288.98
  5. Step 5: Solve for x
    x = 9,205,939,288.98/105,602.20
  6. Step 6: Final answer
    x = 87,175.64

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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.