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Finding the Fourth Proportional to 123,535.70, 185,303.55 and 83,618.90

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Solution

The fourth proportional to 123,535.70, 185,303.55 and 83,618.90 is: 125,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,535.70 : 185,303.55 = 83,618.90 : x
  2. Step 2: Convert to fraction form
    123,535.70/185,303.55 = 83,618.90/x
  3. Step 3: Cross multiply
    123,535.70x = 185,303.55 × 83,618.90
  4. Step 4: Simplify right side
    123,535.70x = 15,494,879,017.10
  5. Step 5: Solve for x
    x = 15,494,879,017.10/123,535.70
  6. Step 6: Final answer
    x = 125,428.35

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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.