Home / 125,455.80-188,123.22-72,880.32

Finding the Fourth Proportional to 125,455.80, 188,123.22 and 72,880.32

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Solution

The fourth proportional to 125,455.80, 188,123.22 and 72,880.32 is: 109,285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.80 : 188,123.22 = 72,880.32 : x
  2. Step 2: Convert to fraction form
    125,455.80/188,123.22 = 72,880.32/x
  3. Step 3: Cross multiply
    125,455.80x = 188,123.22 × 72,880.32
  4. Step 4: Simplify right side
    125,455.80x = 13,710,480,473.03
  5. Step 5: Solve for x
    x = 13,710,480,473.03/125,455.80
  6. Step 6: Final answer
    x = 109,285.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.