Home / 105,055.19-144,975.65-57,308.12

Finding the Fourth Proportional to 105,055.19, 144,975.65 and 57,308.12

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Solution

The fourth proportional to 105,055.19, 144,975.65 and 57,308.12 is: 79,084.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,055.19 : 144,975.65 = 57,308.12 : x
  2. Step 2: Convert to fraction form
    105,055.19/144,975.65 = 57,308.12/x
  3. Step 3: Cross multiply
    105,055.19x = 144,975.65 × 57,308.12
  4. Step 4: Simplify right side
    105,055.19x = 8,308,280,935.86
  5. Step 5: Solve for x
    x = 8,308,280,935.86/105,055.19
  6. Step 6: Final answer
    x = 79,084.92

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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.