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Finding the Fourth Proportional to 105,063.59, 144,985.32 and 57,318.62

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Solution

The fourth proportional to 105,063.59, 144,985.32 and 57,318.62 is: 79,098.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,063.59 : 144,985.32 = 57,318.62 : x
  2. Step 2: Convert to fraction form
    105,063.59/144,985.32 = 57,318.62/x
  3. Step 3: Cross multiply
    105,063.59x = 144,985.32 × 57,318.62
  4. Step 4: Simplify right side
    105,063.59x = 8,310,358,462.66
  5. Step 5: Solve for x
    x = 8,310,358,462.66/105,063.59
  6. Step 6: Final answer
    x = 79,098.37

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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.