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Finding the Fourth Proportional to 99,740.90, 149,482.08 and 40,507.76

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Solution

The fourth proportional to 99,740.90, 149,482.08 and 40,507.76 is: 60,709.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,740.90 : 149,482.08 = 40,507.76 : x
  2. Step 2: Convert to fraction form
    99,740.90/149,482.08 = 40,507.76/x
  3. Step 3: Cross multiply
    99,740.90x = 149,482.08 × 40,507.76
  4. Step 4: Simplify right side
    99,740.90x = 6,055,184,220.94
  5. Step 5: Solve for x
    x = 6,055,184,220.94/99,740.90
  6. Step 6: Final answer
    x = 60,709.14

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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.