Home / 145,543.10-200,835.19-81,879.53

Finding the Fourth Proportional to 145,543.10, 200,835.19 and 81,879.53

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Solution

The fourth proportional to 145,543.10, 200,835.19 and 81,879.53 is: 112,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,543.10 : 200,835.19 = 81,879.53 : x
  2. Step 2: Convert to fraction form
    145,543.10/200,835.19 = 81,879.53/x
  3. Step 3: Cross multiply
    145,543.10x = 200,835.19 × 81,879.53
  4. Step 4: Simplify right side
    145,543.10x = 16,444,290,964.66
  5. Step 5: Solve for x
    x = 16,444,290,964.66/145,543.10
  6. Step 6: Final answer
    x = 112,985.71

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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.