Home / 154,749.50-213,557.55-87,681.50

Finding the Fourth Proportional to 154,749.50, 213,557.55 and 87,681.50

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Solution

The fourth proportional to 154,749.50, 213,557.55 and 87,681.50 is: 121,002.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,749.50 : 213,557.55 = 87,681.50 : x
  2. Step 2: Convert to fraction form
    154,749.50/213,557.55 = 87,681.50/x
  3. Step 3: Cross multiply
    154,749.50x = 213,557.55 × 87,681.50
  4. Step 4: Simplify right side
    154,749.50x = 18,725,046,320.33
  5. Step 5: Solve for x
    x = 18,725,046,320.33/154,749.50
  6. Step 6: Final answer
    x = 121,002.31

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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.