Home / 145,822.86-201,208.59-85,390.38

Finding the Fourth Proportional to 145,822.86, 201,208.59 and 85,390.38

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Solution

The fourth proportional to 145,822.86, 201,208.59 and 85,390.38 is: 117,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,822.86 : 201,208.59 = 85,390.38 : x
  2. Step 2: Convert to fraction form
    145,822.86/201,208.59 = 85,390.38/x
  3. Step 3: Cross multiply
    145,822.86x = 201,208.59 × 85,390.38
  4. Step 4: Simplify right side
    145,822.86x = 17,181,277,959.36
  5. Step 5: Solve for x
    x = 17,181,277,959.36/145,822.86
  6. Step 6: Final answer
    x = 117,822.94

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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.