Home / 85,889.04-128,837.60-70,868.29

Finding the Fourth Proportional to 85,889.04, 128,837.60 and 70,868.29

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Solution

The fourth proportional to 85,889.04, 128,837.60 and 70,868.29 is: 106,305.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,889.04 : 128,837.60 = 70,868.29 : x
  2. Step 2: Convert to fraction form
    85,889.04/128,837.60 = 70,868.29/x
  3. Step 3: Cross multiply
    85,889.04x = 128,837.60 × 70,868.29
  4. Step 4: Simplify right side
    85,889.04x = 9,130,500,399.70
  5. Step 5: Solve for x
    x = 9,130,500,399.70/85,889.04
  6. Step 6: Final answer
    x = 106,305.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.