Home / 137,865.42-190,254.06-77,437.80

Finding the Fourth Proportional to 137,865.42, 190,254.06 and 77,437.80

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Solution

The fourth proportional to 137,865.42, 190,254.06 and 77,437.80 is: 106,864.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,865.42 : 190,254.06 = 77,437.80 : x
  2. Step 2: Convert to fraction form
    137,865.42/190,254.06 = 77,437.80/x
  3. Step 3: Cross multiply
    137,865.42x = 190,254.06 × 77,437.80
  4. Step 4: Simplify right side
    137,865.42x = 14,732,855,847.47
  5. Step 5: Solve for x
    x = 14,732,855,847.47/137,865.42
  6. Step 6: Final answer
    x = 106,864.04

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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.