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Finding the Fourth Proportional to 105,603, 145,696.26 and 60,248.40

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Solution

The fourth proportional to 105,603, 145,696.26 and 60,248.40 is: 83,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,603 : 145,696.26 = 60,248.40 : x
  2. Step 2: Convert to fraction form
    105,603/145,696.26 = 60,248.40/x
  3. Step 3: Cross multiply
    105,603x = 145,696.26 × 60,248.40
  4. Step 4: Simplify right side
    105,603x = 8,777,966,550.98
  5. Step 5: Solve for x
    x = 8,777,966,550.98/105,603
  6. Step 6: Final answer
    x = 83,122.32

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1.5x scale

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.