Home / 143,836.56-214,656.48-128,090.16

Finding the Fourth Proportional to 143,836.56, 214,656.48 and 128,090.16

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Solution

The fourth proportional to 143,836.56, 214,656.48 and 128,090.16 is: 191,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,836.56 : 214,656.48 = 128,090.16 : x
  2. Step 2: Convert to fraction form
    143,836.56/214,656.48 = 128,090.16/x
  3. Step 3: Cross multiply
    143,836.56x = 214,656.48 × 128,090.16
  4. Step 4: Simplify right side
    143,836.56x = 27,495,382,868.24
  5. Step 5: Solve for x
    x = 27,495,382,868.24/143,836.56
  6. Step 6: Final answer
    x = 191,157.12

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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.