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Finding the Fourth Proportional to 105,065.63, 144,985.52 and 57,316.13

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Solution

The fourth proportional to 105,065.63, 144,985.52 and 57,316.13 is: 79,093.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,065.63 : 144,985.52 = 57,316.13 : x
  2. Step 2: Convert to fraction form
    105,065.63/144,985.52 = 57,316.13/x
  3. Step 3: Cross multiply
    105,065.63x = 144,985.52 × 57,316.13
  4. Step 4: Simplify right side
    105,065.63x = 8,310,008,625.86
  5. Step 5: Solve for x
    x = 8,310,008,625.86/105,065.63
  6. Step 6: Final answer
    x = 79,093.50

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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.