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Finding the Fourth Proportional to 102,253.40, 153,603.72 and 72,860.12

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Solution

The fourth proportional to 102,253.40, 153,603.72 and 72,860.12 is: 109,449.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,253.40 : 153,603.72 = 72,860.12 : x
  2. Step 2: Convert to fraction form
    102,253.40/153,603.72 = 72,860.12/x
  3. Step 3: Cross multiply
    102,253.40x = 153,603.72 × 72,860.12
  4. Step 4: Simplify right side
    102,253.40x = 11,191,585,471.65
  5. Step 5: Solve for x
    x = 11,191,585,471.65/102,253.40
  6. Step 6: Final answer
    x = 109,449.52

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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.