Home / 212,071.68-292,536.90-127,139.40

Finding the Fourth Proportional to 212,071.68, 292,536.90 and 127,139.40

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Solution

The fourth proportional to 212,071.68, 292,536.90 and 127,139.40 is: 175,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,071.68 : 292,536.90 = 127,139.40 : x
  2. Step 2: Convert to fraction form
    212,071.68/292,536.90 = 127,139.40/x
  3. Step 3: Cross multiply
    212,071.68x = 292,536.90 × 127,139.40
  4. Step 4: Simplify right side
    212,071.68x = 37,192,965,943.86
  5. Step 5: Solve for x
    x = 37,192,965,943.86/212,071.68
  6. Step 6: Final answer
    x = 175,379.22

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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.