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Finding the Fourth Proportional to 102,711.20, 153,937.20 and 50,007.20

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Solution

The fourth proportional to 102,711.20, 153,937.20 and 50,007.20 is: 74,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,711.20 : 153,937.20 = 50,007.20 : x
  2. Step 2: Convert to fraction form
    102,711.20/153,937.20 = 50,007.20/x
  3. Step 3: Cross multiply
    102,711.20x = 153,937.20 × 50,007.20
  4. Step 4: Simplify right side
    102,711.20x = 7,697,968,347.84
  5. Step 5: Solve for x
    x = 7,697,968,347.84/102,711.20
  6. Step 6: Final answer
    x = 74,947.70

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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.