Home / 110,128.60-152,001.78-72,406.36

Finding the Fourth Proportional to 110,128.60, 152,001.78 and 72,406.36

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Solution

The fourth proportional to 110,128.60, 152,001.78 and 72,406.36 is: 99,936.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,128.60 : 152,001.78 = 72,406.36 : x
  2. Step 2: Convert to fraction form
    110,128.60/152,001.78 = 72,406.36/x
  3. Step 3: Cross multiply
    110,128.60x = 152,001.78 × 72,406.36
  4. Step 4: Simplify right side
    110,128.60x = 11,005,895,603.32
  5. Step 5: Solve for x
    x = 11,005,895,603.32/110,128.60
  6. Step 6: Final answer
    x = 99,936.76

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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.