Home / 109,543.71-151,177.32-61,779.63

Finding the Fourth Proportional to 109,543.71, 151,177.32 and 61,779.63

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Solution

The fourth proportional to 109,543.71, 151,177.32 and 61,779.63 is: 85,259.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,543.71 : 151,177.32 = 61,779.63 : x
  2. Step 2: Convert to fraction form
    109,543.71/151,177.32 = 61,779.63/x
  3. Step 3: Cross multiply
    109,543.71x = 151,177.32 × 61,779.63
  4. Step 4: Simplify right side
    109,543.71x = 9,339,678,893.99
  5. Step 5: Solve for x
    x = 9,339,678,893.99/109,543.71
  6. Step 6: Final answer
    x = 85,259.84

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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.