Home / 105,721.62-145,888.71-57,973.95

Finding the Fourth Proportional to 105,721.62, 145,888.71 and 57,973.95

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Solution

The fourth proportional to 105,721.62, 145,888.71 and 57,973.95 is: 80,000.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,721.62 : 145,888.71 = 57,973.95 : x
  2. Step 2: Convert to fraction form
    105,721.62/145,888.71 = 57,973.95/x
  3. Step 3: Cross multiply
    105,721.62x = 145,888.71 × 57,973.95
  4. Step 4: Simplify right side
    105,721.62x = 8,457,744,779.10
  5. Step 5: Solve for x
    x = 8,457,744,779.10/105,721.62
  6. Step 6: Final answer
    x = 80,000.14

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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.