Home / 145,847.07-201,268.95-78,779.07

Finding the Fourth Proportional to 145,847.07, 201,268.95 and 78,779.07

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Solution

The fourth proportional to 145,847.07, 201,268.95 and 78,779.07 is: 108,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,847.07 : 201,268.95 = 78,779.07 : x
  2. Step 2: Convert to fraction form
    145,847.07/201,268.95 = 78,779.07/x
  3. Step 3: Cross multiply
    145,847.07x = 201,268.95 × 78,779.07
  4. Step 4: Simplify right side
    145,847.07x = 15,855,780,700.88
  5. Step 5: Solve for x
    x = 15,855,780,700.88/145,847.07
  6. Step 6: Final answer
    x = 108,715.11

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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.