Home / 135,566.32-187,038.74-78,197.94

Finding the Fourth Proportional to 135,566.32, 187,038.74 and 78,197.94

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Solution

The fourth proportional to 135,566.32, 187,038.74 and 78,197.94 is: 107,888.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,566.32 : 187,038.74 = 78,197.94 : x
  2. Step 2: Convert to fraction form
    135,566.32/187,038.74 = 78,197.94/x
  3. Step 3: Cross multiply
    135,566.32x = 187,038.74 × 78,197.94
  4. Step 4: Simplify right side
    135,566.32x = 14,626,044,168.20
  5. Step 5: Solve for x
    x = 14,626,044,168.20/135,566.32
  6. Step 6: Final answer
    x = 107,888.48

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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.