Home / 100,129.24-138,168.90-59,834.98

Finding the Fourth Proportional to 100,129.24, 138,168.90 and 59,834.98

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Solution

The fourth proportional to 100,129.24, 138,168.90 and 59,834.98 is: 82,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,129.24 : 138,168.90 = 59,834.98 : x
  2. Step 2: Convert to fraction form
    100,129.24/138,168.90 = 59,834.98/x
  3. Step 3: Cross multiply
    100,129.24x = 138,168.90 × 59,834.98
  4. Step 4: Simplify right side
    100,129.24x = 8,267,333,368.12
  5. Step 5: Solve for x
    x = 8,267,333,368.12/100,129.24
  6. Step 6: Final answer
    x = 82,566.62

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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.