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Finding the Fourth Proportional to 105,165.29, 145,110.98 and 62,138.79

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Solution

The fourth proportional to 105,165.29, 145,110.98 and 62,138.79 is: 85,741.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,165.29 : 145,110.98 = 62,138.79 : x
  2. Step 2: Convert to fraction form
    105,165.29/145,110.98 = 62,138.79/x
  3. Step 3: Cross multiply
    105,165.29x = 145,110.98 × 62,138.79
  4. Step 4: Simplify right side
    105,165.29x = 9,017,020,868.26
  5. Step 5: Solve for x
    x = 9,017,020,868.26/105,165.29
  6. Step 6: Final answer
    x = 85,741.41

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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.