Home / 100,458.18-138,636.63-60,178.50

Finding the Fourth Proportional to 100,458.18, 138,636.63 and 60,178.50

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Solution

The fourth proportional to 100,458.18, 138,636.63 and 60,178.50 is: 83,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,458.18 : 138,636.63 = 60,178.50 : x
  2. Step 2: Convert to fraction form
    100,458.18/138,636.63 = 60,178.50/x
  3. Step 3: Cross multiply
    100,458.18x = 138,636.63 × 60,178.50
  4. Step 4: Simplify right side
    100,458.18x = 8,342,944,438.46
  5. Step 5: Solve for x
    x = 8,342,944,438.46/100,458.18
  6. Step 6: Final answer
    x = 83,048.93

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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.