Home / 102,075.42-140,864.95-66,278.94

Finding the Fourth Proportional to 102,075.42, 140,864.95 and 66,278.94

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Solution

The fourth proportional to 102,075.42, 140,864.95 and 66,278.94 is: 91,465.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,075.42 : 140,864.95 = 66,278.94 : x
  2. Step 2: Convert to fraction form
    102,075.42/140,864.95 = 66,278.94/x
  3. Step 3: Cross multiply
    102,075.42x = 140,864.95 × 66,278.94
  4. Step 4: Simplify right side
    102,075.42x = 9,336,379,569.15
  5. Step 5: Solve for x
    x = 9,336,379,569.15/102,075.42
  6. Step 6: Final answer
    x = 91,465.50

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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.