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Finding the Fourth Proportional to 101,075.76, 139,483.87 and 55,754.98

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Solution

The fourth proportional to 101,075.76, 139,483.87 and 55,754.98 is: 76,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,075.76 : 139,483.87 = 55,754.98 : x
  2. Step 2: Convert to fraction form
    101,075.76/139,483.87 = 55,754.98/x
  3. Step 3: Cross multiply
    101,075.76x = 139,483.87 × 55,754.98
  4. Step 4: Simplify right side
    101,075.76x = 7,776,919,894.08
  5. Step 5: Solve for x
    x = 7,776,919,894.08/101,075.76
  6. Step 6: Final answer
    x = 76,941.49

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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.