Home / 120,345.40-166,079.18-65,899.86

Finding the Fourth Proportional to 120,345.40, 166,079.18 and 65,899.86

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Solution

The fourth proportional to 120,345.40, 166,079.18 and 65,899.86 is: 90,943.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,345.40 : 166,079.18 = 65,899.86 : x
  2. Step 2: Convert to fraction form
    120,345.40/166,079.18 = 65,899.86/x
  3. Step 3: Cross multiply
    120,345.40x = 166,079.18 × 65,899.86
  4. Step 4: Simplify right side
    120,345.40x = 10,944,594,875.66
  5. Step 5: Solve for x
    x = 10,944,594,875.66/120,345.40
  6. Step 6: Final answer
    x = 90,943.19

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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.