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Finding the Fourth Proportional to 125,390.84, 173,039.35 and 71,677.01

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Solution

The fourth proportional to 125,390.84, 173,039.35 and 71,677.01 is: 98,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,390.84 : 173,039.35 = 71,677.01 : x
  2. Step 2: Convert to fraction form
    125,390.84/173,039.35 = 71,677.01/x
  3. Step 3: Cross multiply
    125,390.84x = 173,039.35 × 71,677.01
  4. Step 4: Simplify right side
    125,390.84x = 12,402,943,220.34
  5. Step 5: Solve for x
    x = 12,402,943,220.34/125,390.84
  6. Step 6: Final answer
    x = 98,914.27

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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.