Home / 92,661.06-128,410.35-90,888.78

Finding the Fourth Proportional to 92,661.06, 128,410.35 and 90,888.78

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Solution

The fourth proportional to 92,661.06, 128,410.35 and 90,888.78 is: 125,954.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,661.06 : 128,410.35 = 90,888.78 : x
  2. Step 2: Convert to fraction form
    92,661.06/128,410.35 = 90,888.78/x
  3. Step 3: Cross multiply
    92,661.06x = 128,410.35 × 90,888.78
  4. Step 4: Simplify right side
    92,661.06x = 11,671,060,050.87
  5. Step 5: Solve for x
    x = 11,671,060,050.87/92,661.06
  6. Step 6: Final answer
    x = 125,954.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.