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Finding the Fourth Proportional to 149,615.72, 206,477.59 and 85,957.64

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Solution

The fourth proportional to 149,615.72, 206,477.59 and 85,957.64 is: 118,626.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,615.72 : 206,477.59 = 85,957.64 : x
  2. Step 2: Convert to fraction form
    149,615.72/206,477.59 = 85,957.64/x
  3. Step 3: Cross multiply
    149,615.72x = 206,477.59 × 85,957.64
  4. Step 4: Simplify right side
    149,615.72x = 17,748,326,349.29
  5. Step 5: Solve for x
    x = 17,748,326,349.29/149,615.72
  6. Step 6: Final answer
    x = 118,626.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.