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Finding the Fourth Proportional to 101,152.79, 139,638.08 and 58,703.12

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Solution

The fourth proportional to 101,152.79, 139,638.08 and 58,703.12 is: 81,037.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,152.79 : 139,638.08 = 58,703.12 : x
  2. Step 2: Convert to fraction form
    101,152.79/139,638.08 = 58,703.12/x
  3. Step 3: Cross multiply
    101,152.79x = 139,638.08 × 58,703.12
  4. Step 4: Simplify right side
    101,152.79x = 8,197,190,966.81
  5. Step 5: Solve for x
    x = 8,197,190,966.81/101,152.79
  6. Step 6: Final answer
    x = 81,037.71

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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.