Home / 91,088.60-135,717.06-85,995.63

Finding the Fourth Proportional to 91,088.60, 135,717.06 and 85,995.63

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Solution

The fourth proportional to 91,088.60, 135,717.06 and 85,995.63 is: 128,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,088.60 : 135,717.06 = 85,995.63 : x
  2. Step 2: Convert to fraction form
    91,088.60/135,717.06 = 85,995.63/x
  3. Step 3: Cross multiply
    91,088.60x = 135,717.06 × 85,995.63
  4. Step 4: Simplify right side
    91,088.60x = 11,671,074,076.45
  5. Step 5: Solve for x
    x = 11,671,074,076.45/91,088.60
  6. Step 6: Final answer
    x = 128,128.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.