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Finding the Fourth Proportional to 152,643.70, 228,965.55 and 99,499.60

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Solution

The fourth proportional to 152,643.70, 228,965.55 and 99,499.60 is: 149,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,643.70 : 228,965.55 = 99,499.60 : x
  2. Step 2: Convert to fraction form
    152,643.70/228,965.55 = 99,499.60/x
  3. Step 3: Cross multiply
    152,643.70x = 228,965.55 × 99,499.60
  4. Step 4: Simplify right side
    152,643.70x = 22,781,980,638.78
  5. Step 5: Solve for x
    x = 22,781,980,638.78/152,643.70
  6. Step 6: Final answer
    x = 149,249.40

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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.