Home / 125,834.55-173,655.80-72,129.72

Finding the Fourth Proportional to 125,834.55, 173,655.80 and 72,129.72

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Solution

The fourth proportional to 125,834.55, 173,655.80 and 72,129.72 is: 99,541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,834.55 : 173,655.80 = 72,129.72 : x
  2. Step 2: Convert to fraction form
    125,834.55/173,655.80 = 72,129.72/x
  3. Step 3: Cross multiply
    125,834.55x = 173,655.80 × 72,129.72
  4. Step 4: Simplify right side
    125,834.55x = 12,525,744,791.42
  5. Step 5: Solve for x
    x = 12,525,744,791.42/125,834.55
  6. Step 6: Final answer
    x = 99,541.38

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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.