Home / 125,890.08-173,723.10-72,137.70

Finding the Fourth Proportional to 125,890.08, 173,723.10 and 72,137.70

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Solution

The fourth proportional to 125,890.08, 173,723.10 and 72,137.70 is: 99,547.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,890.08 : 173,723.10 = 72,137.70 : x
  2. Step 2: Convert to fraction form
    125,890.08/173,723.10 = 72,137.70/x
  3. Step 3: Cross multiply
    125,890.08x = 173,723.10 × 72,137.70
  4. Step 4: Simplify right side
    125,890.08x = 12,531,984,870.87
  5. Step 5: Solve for x
    x = 12,531,984,870.87/125,890.08
  6. Step 6: Final answer
    x = 99,547.04

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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.