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Finding the Fourth Proportional to 148,671.90, 205,167.14 and 84,139.98

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Solution

The fourth proportional to 148,671.90, 205,167.14 and 84,139.98 is: 116,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,671.90 : 205,167.14 = 84,139.98 : x
  2. Step 2: Convert to fraction form
    148,671.90/205,167.14 = 84,139.98/x
  3. Step 3: Cross multiply
    148,671.90x = 205,167.14 × 84,139.98
  4. Step 4: Simplify right side
    148,671.90x = 17,262,759,056.26
  5. Step 5: Solve for x
    x = 17,262,759,056.26/148,671.90
  6. Step 6: Final answer
    x = 116,113.13

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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.