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Finding the Fourth Proportional to 99,666.34, 149,330.34 and 60,140.40

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Solution

The fourth proportional to 99,666.34, 149,330.34 and 60,140.40 is: 90,108.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,666.34 : 149,330.34 = 60,140.40 : x
  2. Step 2: Convert to fraction form
    99,666.34/149,330.34 = 60,140.40/x
  3. Step 3: Cross multiply
    99,666.34x = 149,330.34 × 60,140.40
  4. Step 4: Simplify right side
    99,666.34x = 8,980,786,379.74
  5. Step 5: Solve for x
    x = 8,980,786,379.74/99,666.34
  6. Step 6: Final answer
    x = 90,108.52

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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.