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Finding the Fourth Proportional to 101,392.21, 139,931.76 and 58,373.25

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Solution

The fourth proportional to 101,392.21, 139,931.76 and 58,373.25 is: 80,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,392.21 : 139,931.76 = 58,373.25 : x
  2. Step 2: Convert to fraction form
    101,392.21/139,931.76 = 58,373.25/x
  3. Step 3: Cross multiply
    101,392.21x = 139,931.76 × 58,373.25
  4. Step 4: Simplify right side
    101,392.21x = 8,168,271,609.42
  5. Step 5: Solve for x
    x = 8,168,271,609.42/101,392.21
  6. Step 6: Final answer
    x = 80,561.14

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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.