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Finding the Fourth Proportional to 101,228.84, 139,695.80 and 58,790.10

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Solution

The fourth proportional to 101,228.84, 139,695.80 and 58,790.10 is: 81,130.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,228.84 : 139,695.80 = 58,790.10 : x
  2. Step 2: Convert to fraction form
    101,228.84/139,695.80 = 58,790.10/x
  3. Step 3: Cross multiply
    101,228.84x = 139,695.80 × 58,790.10
  4. Step 4: Simplify right side
    101,228.84x = 8,212,730,281.49
  5. Step 5: Solve for x
    x = 8,212,730,281.49/101,228.84
  6. Step 6: Final answer
    x = 81,130.34

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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.