Home / 105,089.13-145,023.39-57,343.50

Finding the Fourth Proportional to 105,089.13, 145,023.39 and 57,343.50

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Solution

The fourth proportional to 105,089.13, 145,023.39 and 57,343.50 is: 79,134.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,089.13 : 145,023.39 = 57,343.50 : x
  2. Step 2: Convert to fraction form
    105,089.13/145,023.39 = 57,343.50/x
  3. Step 3: Cross multiply
    105,089.13x = 145,023.39 × 57,343.50
  4. Step 4: Simplify right side
    105,089.13x = 8,316,148,764.47
  5. Step 5: Solve for x
    x = 8,316,148,764.47/105,089.13
  6. Step 6: Final answer
    x = 79,134.24

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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.