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Finding the Fourth Proportional to 100,570.34, 138,812.01 and 58,122.74

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Solution

The fourth proportional to 100,570.34, 138,812.01 and 58,122.74 is: 80,223.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,570.34 : 138,812.01 = 58,122.74 : x
  2. Step 2: Convert to fraction form
    100,570.34/138,812.01 = 58,122.74/x
  3. Step 3: Cross multiply
    100,570.34x = 138,812.01 × 58,122.74
  4. Step 4: Simplify right side
    100,570.34x = 8,068,134,366.11
  5. Step 5: Solve for x
    x = 8,068,134,366.11/100,570.34
  6. Step 6: Final answer
    x = 80,223.80

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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.