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Finding the Fourth Proportional to 99,994.96, 149,720.10 and 70,368.40

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Solution

The fourth proportional to 99,994.96, 149,720.10 and 70,368.40 is: 105,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,994.96 : 149,720.10 = 70,368.40 : x
  2. Step 2: Convert to fraction form
    99,994.96/149,720.10 = 70,368.40/x
  3. Step 3: Cross multiply
    99,994.96x = 149,720.10 × 70,368.40
  4. Step 4: Simplify right side
    99,994.96x = 10,535,563,884.84
  5. Step 5: Solve for x
    x = 10,535,563,884.84/99,994.96
  6. Step 6: Final answer
    x = 105,360.95

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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.