Home / 212,128.27-292,742.02-115,337.66

Finding the Fourth Proportional to 212,128.27, 292,742.02 and 115,337.66

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Solution

The fourth proportional to 212,128.27, 292,742.02 and 115,337.66 is: 159,168.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,128.27 : 292,742.02 = 115,337.66 : x
  2. Step 2: Convert to fraction form
    212,128.27/292,742.02 = 115,337.66/x
  3. Step 3: Cross multiply
    212,128.27x = 292,742.02 × 115,337.66
  4. Step 4: Simplify right side
    212,128.27x = 33,764,177,602.16
  5. Step 5: Solve for x
    x = 33,764,177,602.16/212,128.27
  6. Step 6: Final answer
    x = 159,168.69

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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.