Home / 105,188.69-145,159.66-57,442.04

Finding the Fourth Proportional to 105,188.69, 145,159.66 and 57,442.04

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Solution

The fourth proportional to 105,188.69, 145,159.66 and 57,442.04 is: 79,269.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,188.69 : 145,159.66 = 57,442.04 : x
  2. Step 2: Convert to fraction form
    105,188.69/145,159.66 = 57,442.04/x
  3. Step 3: Cross multiply
    105,188.69x = 145,159.66 × 57,442.04
  4. Step 4: Simplify right side
    105,188.69x = 8,338,266,996.11
  5. Step 5: Solve for x
    x = 8,338,266,996.11/105,188.69
  6. Step 6: Final answer
    x = 79,269.62

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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.