Home / 138,621.83-191,298.33-74,959.63

Finding the Fourth Proportional to 138,621.83, 191,298.33 and 74,959.63

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Solution

The fourth proportional to 138,621.83, 191,298.33 and 74,959.63 is: 103,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,621.83 : 191,298.33 = 74,959.63 : x
  2. Step 2: Convert to fraction form
    138,621.83/191,298.33 = 74,959.63/x
  3. Step 3: Cross multiply
    138,621.83x = 191,298.33 × 74,959.63
  4. Step 4: Simplify right side
    138,621.83x = 14,339,652,036.42
  5. Step 5: Solve for x
    x = 14,339,652,036.42/138,621.83
  6. Step 6: Final answer
    x = 103,444.40

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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.