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Finding the Fourth Proportional to 137,203.77, 205,655.52 and 70,647.89

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Solution

The fourth proportional to 137,203.77, 205,655.52 and 70,647.89 is: 105,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,203.77 : 205,655.52 = 70,647.89 : x
  2. Step 2: Convert to fraction form
    137,203.77/205,655.52 = 70,647.89/x
  3. Step 3: Cross multiply
    137,203.77x = 205,655.52 × 70,647.89
  4. Step 4: Simplify right side
    137,203.77x = 14,529,127,526.58
  5. Step 5: Solve for x
    x = 14,529,127,526.58/137,203.77
  6. Step 6: Final answer
    x = 105,894.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.