Home / 145,977.95-201,449.63-78,909.95

Finding the Fourth Proportional to 145,977.95, 201,449.63 and 78,909.95

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Solution

The fourth proportional to 145,977.95, 201,449.63 and 78,909.95 is: 108,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,977.95 : 201,449.63 = 78,909.95 : x
  2. Step 2: Convert to fraction form
    145,977.95/201,449.63 = 78,909.95/x
  3. Step 3: Cross multiply
    145,977.95x = 201,449.63 × 78,909.95
  4. Step 4: Simplify right side
    145,977.95x = 15,896,379,836.27
  5. Step 5: Solve for x
    x = 15,896,379,836.27/145,977.95
  6. Step 6: Final answer
    x = 108,895.76

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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.