Home / 105,779.10-145,984.60-58,041.74

Finding the Fourth Proportional to 105,779.10, 145,984.60 and 58,041.74

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Solution

The fourth proportional to 105,779.10, 145,984.60 and 58,041.74 is: 80,102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,779.10 : 145,984.60 = 58,041.74 : x
  2. Step 2: Convert to fraction form
    105,779.10/145,984.60 = 58,041.74/x
  3. Step 3: Cross multiply
    105,779.10x = 145,984.60 × 58,041.74
  4. Step 4: Simplify right side
    105,779.10x = 8,473,200,197.20
  5. Step 5: Solve for x
    x = 8,473,200,197.20/105,779.10
  6. Step 6: Final answer
    x = 80,102.78

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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.