Home / 120,292.95-165,938.81-77,279.22

Finding the Fourth Proportional to 120,292.95, 165,938.81 and 77,279.22

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Solution

The fourth proportional to 120,292.95, 165,938.81 and 77,279.22 is: 106,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,292.95 : 165,938.81 = 77,279.22 : x
  2. Step 2: Convert to fraction form
    120,292.95/165,938.81 = 77,279.22/x
  3. Step 3: Cross multiply
    120,292.95x = 165,938.81 × 77,279.22
  4. Step 4: Simplify right side
    120,292.95x = 12,823,621,418.13
  5. Step 5: Solve for x
    x = 12,823,621,418.13/120,292.95
  6. Step 6: Final answer
    x = 106,603.27

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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.