Home / 100,113.66-138,143.21-59,818.91

Finding the Fourth Proportional to 100,113.66, 138,143.21 and 59,818.91

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Solution

The fourth proportional to 100,113.66, 138,143.21 and 59,818.91 is: 82,541.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,113.66 : 138,143.21 = 59,818.91 : x
  2. Step 2: Convert to fraction form
    100,113.66/138,143.21 = 59,818.91/x
  3. Step 3: Cross multiply
    100,113.66x = 138,143.21 × 59,818.91
  4. Step 4: Simplify right side
    100,113.66x = 8,263,575,256.29
  5. Step 5: Solve for x
    x = 8,263,575,256.29/100,113.66
  6. Step 6: Final answer
    x = 82,541.94

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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.