Home / 230,931.15-318,656.89-128,962.28

Finding the Fourth Proportional to 230,931.15, 318,656.89 and 128,962.28

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Solution

The fourth proportional to 230,931.15, 318,656.89 and 128,962.28 is: 177,952.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,931.15 : 318,656.89 = 128,962.28 : x
  2. Step 2: Convert to fraction form
    230,931.15/318,656.89 = 128,962.28/x
  3. Step 3: Cross multiply
    230,931.15x = 318,656.89 × 128,962.28
  4. Step 4: Simplify right side
    230,931.15x = 41,094,719,072.11
  5. Step 5: Solve for x
    x = 41,094,719,072.11/230,931.15
  6. Step 6: Final answer
    x = 177,952.26

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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.