Home / 145,514.49-200,807.03-85,120.89

Finding the Fourth Proportional to 145,514.49, 200,807.03 and 85,120.89

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Solution

The fourth proportional to 145,514.49, 200,807.03 and 85,120.89 is: 117,465.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,514.49 : 200,807.03 = 85,120.89 : x
  2. Step 2: Convert to fraction form
    145,514.49/200,807.03 = 85,120.89/x
  3. Step 3: Cross multiply
    145,514.49x = 200,807.03 × 85,120.89
  4. Step 4: Simplify right side
    145,514.49x = 17,092,872,686.25
  5. Step 5: Solve for x
    x = 17,092,872,686.25/145,514.49
  6. Step 6: Final answer
    x = 117,465.09

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1.5x scale

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.