Home / 103,475.16-142,778.32-61,042.08

Finding the Fourth Proportional to 103,475.16, 142,778.32 and 61,042.08

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Solution

The fourth proportional to 103,475.16, 142,778.32 and 61,042.08 is: 84,227.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,475.16 : 142,778.32 = 61,042.08 : x
  2. Step 2: Convert to fraction form
    103,475.16/142,778.32 = 61,042.08/x
  3. Step 3: Cross multiply
    103,475.16x = 142,778.32 × 61,042.08
  4. Step 4: Simplify right side
    103,475.16x = 8,715,485,631.71
  5. Step 5: Solve for x
    x = 8,715,485,631.71/103,475.16
  6. Step 6: Final answer
    x = 84,227.81

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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.