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Finding the Fourth Proportional to 145,155.35, 217,746.72 and 56,415.65

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Solution

The fourth proportional to 145,155.35, 217,746.72 and 56,415.65 is: 84,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155.35 : 217,746.72 = 56,415.65 : x
  2. Step 2: Convert to fraction form
    145,155.35/217,746.72 = 56,415.65/x
  3. Step 3: Cross multiply
    145,155.35x = 217,746.72 × 56,415.65
  4. Step 4: Simplify right side
    145,155.35x = 12,284,322,744.17
  5. Step 5: Solve for x
    x = 12,284,322,744.17/145,155.35
  6. Step 6: Final answer
    x = 84,628.80

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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.