Home / 115,122.08-172,670.64-30,890.72

Finding the Fourth Proportional to 115,122.08, 172,670.64 and 30,890.72

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Solution

The fourth proportional to 115,122.08, 172,670.64 and 30,890.72 is: 46,332.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,122.08 : 172,670.64 = 30,890.72 : x
  2. Step 2: Convert to fraction form
    115,122.08/172,670.64 = 30,890.72/x
  3. Step 3: Cross multiply
    115,122.08x = 172,670.64 × 30,890.72
  4. Step 4: Simplify right side
    115,122.08x = 5,333,920,392.46
  5. Step 5: Solve for x
    x = 5,333,920,392.46/115,122.08
  6. Step 6: Final answer
    x = 46,332.73

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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.