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Finding the Fourth Proportional to 145,445.60, 217,995.60 and 61,205.60

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Solution

The fourth proportional to 145,445.60, 217,995.60 and 61,205.60 is: 91,735.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,445.60 : 217,995.60 = 61,205.60 : x
  2. Step 2: Convert to fraction form
    145,445.60/217,995.60 = 61,205.60/x
  3. Step 3: Cross multiply
    145,445.60x = 217,995.60 × 61,205.60
  4. Step 4: Simplify right side
    145,445.60x = 13,342,551,495.36
  5. Step 5: Solve for x
    x = 13,342,551,495.36/145,445.60
  6. Step 6: Final answer
    x = 91,735.68

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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.