Home / 110,129.10-152,002.35-72,406.86

Finding the Fourth Proportional to 110,129.10, 152,002.35 and 72,406.86

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Solution

The fourth proportional to 110,129.10, 152,002.35 and 72,406.86 is: 99,937.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,129.10 : 152,002.35 = 72,406.86 : x
  2. Step 2: Convert to fraction form
    110,129.10/152,002.35 = 72,406.86/x
  3. Step 3: Cross multiply
    110,129.10x = 152,002.35 × 72,406.86
  4. Step 4: Simplify right side
    110,129.10x = 11,006,012,876.12
  5. Step 5: Solve for x
    x = 11,006,012,876.12/110,129.10
  6. Step 6: Final answer
    x = 99,937.37

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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.