Home / 212,143.95-292,685.81-131,542.47

Finding the Fourth Proportional to 212,143.95, 292,685.81 and 131,542.47

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Solution

The fourth proportional to 212,143.95, 292,685.81 and 131,542.47 is: 181,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,143.95 : 292,685.81 = 131,542.47 : x
  2. Step 2: Convert to fraction form
    212,143.95/292,685.81 = 131,542.47/x
  3. Step 3: Cross multiply
    212,143.95x = 292,685.81 × 131,542.47
  4. Step 4: Simplify right side
    212,143.95x = 38,500,613,723.64
  5. Step 5: Solve for x
    x = 38,500,613,723.64/212,143.95
  6. Step 6: Final answer
    x = 181,483.44

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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.