Home / 105,102.86-145,045.01-57,359.29

Finding the Fourth Proportional to 105,102.86, 145,045.01 and 57,359.29

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Solution

The fourth proportional to 105,102.86, 145,045.01 and 57,359.29 is: 79,157.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,102.86 : 145,045.01 = 57,359.29 : x
  2. Step 2: Convert to fraction form
    105,102.86/145,045.01 = 57,359.29/x
  3. Step 3: Cross multiply
    105,102.86x = 145,045.01 × 57,359.29
  4. Step 4: Simplify right side
    105,102.86x = 8,319,677,779.62
  5. Step 5: Solve for x
    x = 8,319,677,779.62/105,102.86
  6. Step 6: Final answer
    x = 79,157.48

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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.