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Finding the Fourth Proportional to 103,995.70, 143,513.60 and 56,248.92

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Solution

The fourth proportional to 103,995.70, 143,513.60 and 56,248.92 is: 77,623.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,995.70 : 143,513.60 = 56,248.92 : x
  2. Step 2: Convert to fraction form
    103,995.70/143,513.60 = 56,248.92/x
  3. Step 3: Cross multiply
    103,995.70x = 143,513.60 × 56,248.92
  4. Step 4: Simplify right side
    103,995.70x = 8,072,484,724.07
  5. Step 5: Solve for x
    x = 8,072,484,724.07/103,995.70
  6. Step 6: Final answer
    x = 77,623.26

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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.