Home / 112,425.98-155,076.48-85,509.47

Finding the Fourth Proportional to 112,425.98, 155,076.48 and 85,509.47

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Solution

The fourth proportional to 112,425.98, 155,076.48 and 85,509.47 is: 117,948.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,425.98 : 155,076.48 = 85,509.47 : x
  2. Step 2: Convert to fraction form
    112,425.98/155,076.48 = 85,509.47/x
  3. Step 3: Cross multiply
    112,425.98x = 155,076.48 × 85,509.47
  4. Step 4: Simplify right side
    112,425.98x = 13,260,508,001.96
  5. Step 5: Solve for x
    x = 13,260,508,001.96/112,425.98
  6. Step 6: Final answer
    x = 117,948.79

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1.5x scale

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.