Home / 170,918.40-256,204.80-77,491.20

Finding the Fourth Proportional to 170,918.40, 256,204.80 and 77,491.20

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Solution

The fourth proportional to 170,918.40, 256,204.80 and 77,491.20 is: 116,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,918.40 : 256,204.80 = 77,491.20 : x
  2. Step 2: Convert to fraction form
    170,918.40/256,204.80 = 77,491.20/x
  3. Step 3: Cross multiply
    170,918.40x = 256,204.80 × 77,491.20
  4. Step 4: Simplify right side
    170,918.40x = 19,853,617,397.76
  5. Step 5: Solve for x
    x = 19,853,617,397.76/170,918.40
  6. Step 6: Final answer
    x = 116,158.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.