Home / 138,277.35-190,810.44-77,018.85

Finding the Fourth Proportional to 138,277.35, 190,810.44 and 77,018.85

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Solution

The fourth proportional to 138,277.35, 190,810.44 and 77,018.85 is: 106,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,277.35 : 190,810.44 = 77,018.85 : x
  2. Step 2: Convert to fraction form
    138,277.35/190,810.44 = 77,018.85/x
  3. Step 3: Cross multiply
    138,277.35x = 190,810.44 × 77,018.85
  4. Step 4: Simplify right side
    138,277.35x = 14,696,000,656.79
  5. Step 5: Solve for x
    x = 14,696,000,656.79/138,277.35
  6. Step 6: Final answer
    x = 106,279.16

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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.