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Finding the Fourth Proportional to 102,710.70, 154,066.05 and 74,498.40

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Solution

The fourth proportional to 102,710.70, 154,066.05 and 74,498.40 is: 111,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,710.70 : 154,066.05 = 74,498.40 : x
  2. Step 2: Convert to fraction form
    102,710.70/154,066.05 = 74,498.40/x
  3. Step 3: Cross multiply
    102,710.70x = 154,066.05 × 74,498.40
  4. Step 4: Simplify right side
    102,710.70x = 11,477,674,219.32
  5. Step 5: Solve for x
    x = 11,477,674,219.32/102,710.70
  6. Step 6: Final answer
    x = 111,747.60

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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.