Home / 117,647.57-162,271.56-77,348.45

Finding the Fourth Proportional to 117,647.57, 162,271.56 and 77,348.45

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Solution

The fourth proportional to 117,647.57, 162,271.56 and 77,348.45 is: 106,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,647.57 : 162,271.56 = 77,348.45 : x
  2. Step 2: Convert to fraction form
    117,647.57/162,271.56 = 77,348.45/x
  3. Step 3: Cross multiply
    117,647.57x = 162,271.56 × 77,348.45
  4. Step 4: Simplify right side
    117,647.57x = 12,551,452,446.98
  5. Step 5: Solve for x
    x = 12,551,452,446.98/117,647.57
  6. Step 6: Final answer
    x = 106,686.89

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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.