Home / 102,612.81-141,608.51-57,289.05

Finding the Fourth Proportional to 102,612.81, 141,608.51 and 57,289.05

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Solution

The fourth proportional to 102,612.81, 141,608.51 and 57,289.05 is: 79,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,612.81 : 141,608.51 = 57,289.05 : x
  2. Step 2: Convert to fraction form
    102,612.81/141,608.51 = 57,289.05/x
  3. Step 3: Cross multiply
    102,612.81x = 141,608.51 × 57,289.05
  4. Step 4: Simplify right side
    102,612.81x = 8,112,616,723.37
  5. Step 5: Solve for x
    x = 8,112,616,723.37/102,612.81
  6. Step 6: Final answer
    x = 79,060.47

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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.