Home / 125,535.20-188,302.80-42,429.20

Finding the Fourth Proportional to 125,535.20, 188,302.80 and 42,429.20

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Solution

The fourth proportional to 125,535.20, 188,302.80 and 42,429.20 is: 63,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,535.20 : 188,302.80 = 42,429.20 : x
  2. Step 2: Convert to fraction form
    125,535.20/188,302.80 = 42,429.20/x
  3. Step 3: Cross multiply
    125,535.20x = 188,302.80 × 42,429.20
  4. Step 4: Simplify right side
    125,535.20x = 7,989,537,161.76
  5. Step 5: Solve for x
    x = 7,989,537,161.76/125,535.20
  6. Step 6: Final answer
    x = 63,643.80

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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.