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Finding the Fourth Proportional to 102,473.77, 153,762.92 and 69,123.95

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Solution

The fourth proportional to 102,473.77, 153,762.92 and 69,123.95 is: 103,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,473.77 : 153,762.92 = 69,123.95 : x
  2. Step 2: Convert to fraction form
    102,473.77/153,762.92 = 69,123.95/x
  3. Step 3: Cross multiply
    102,473.77x = 153,762.92 × 69,123.95
  4. Step 4: Simplify right side
    102,473.77x = 10,628,699,279.50
  5. Step 5: Solve for x
    x = 10,628,699,279.50/102,473.77
  6. Step 6: Final answer
    x = 103,721.17

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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.