Home / 105,137.54-145,089.74-57,390.88

Finding the Fourth Proportional to 105,137.54, 145,089.74 and 57,390.88

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Solution

The fourth proportional to 105,137.54, 145,089.74 and 57,390.88 is: 79,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,137.54 : 145,089.74 = 57,390.88 : x
  2. Step 2: Convert to fraction form
    105,137.54/145,089.74 = 57,390.88/x
  3. Step 3: Cross multiply
    105,137.54x = 145,089.74 × 57,390.88
  4. Step 4: Simplify right side
    105,137.54x = 8,326,827,638.32
  5. Step 5: Solve for x
    x = 8,326,827,638.32/105,137.54
  6. Step 6: Final answer
    x = 79,199.37

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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.