Home / 129,545.87-178,768.58-72,182.23

Finding the Fourth Proportional to 129,545.87, 178,768.58 and 72,182.23

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Solution

The fourth proportional to 129,545.87, 178,768.58 and 72,182.23 is: 99,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,545.87 : 178,768.58 = 72,182.23 : x
  2. Step 2: Convert to fraction form
    129,545.87/178,768.58 = 72,182.23/x
  3. Step 3: Cross multiply
    129,545.87x = 178,768.58 × 72,182.23
  4. Step 4: Simplify right side
    129,545.87x = 12,903,913,950.50
  5. Step 5: Solve for x
    x = 12,903,913,950.50/129,545.87
  6. Step 6: Final answer
    x = 99,608.84

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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.