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Finding the Fourth Proportional to 125,449.48, 188,075.58 and 85,886.68

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Solution

The fourth proportional to 125,449.48, 188,075.58 and 85,886.68 is: 128,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,449.48 : 188,075.58 = 85,886.68 : x
  2. Step 2: Convert to fraction form
    125,449.48/188,075.58 = 85,886.68/x
  3. Step 3: Cross multiply
    125,449.48x = 188,075.58 × 85,886.68
  4. Step 4: Simplify right side
    125,449.48x = 16,153,187,155.27
  5. Step 5: Solve for x
    x = 16,153,187,155.27/125,449.48
  6. Step 6: Final answer
    x = 128,762.49

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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.