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Finding the Fourth Proportional to 108,663.64, 149,946.78 and 60,915.40

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Solution

The fourth proportional to 108,663.64, 149,946.78 and 60,915.40 is: 84,058.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,663.64 : 149,946.78 = 60,915.40 : x
  2. Step 2: Convert to fraction form
    108,663.64/149,946.78 = 60,915.40/x
  3. Step 3: Cross multiply
    108,663.64x = 149,946.78 × 60,915.40
  4. Step 4: Simplify right side
    108,663.64x = 9,134,068,082.41
  5. Step 5: Solve for x
    x = 9,134,068,082.41/108,663.64
  6. Step 6: Final answer
    x = 84,058.18

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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.