Home / 119,866.08-165,430.44-72,145.20

Finding the Fourth Proportional to 119,866.08, 165,430.44 and 72,145.20

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Solution

The fourth proportional to 119,866.08, 165,430.44 and 72,145.20 is: 99,569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,866.08 : 165,430.44 = 72,145.20 : x
  2. Step 2: Convert to fraction form
    119,866.08/165,430.44 = 72,145.20/x
  3. Step 3: Cross multiply
    119,866.08x = 165,430.44 × 72,145.20
  4. Step 4: Simplify right side
    119,866.08x = 11,935,012,179.89
  5. Step 5: Solve for x
    x = 11,935,012,179.89/119,866.08
  6. Step 6: Final answer
    x = 99,569.55

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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.