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Finding the Fourth Proportional to 108,000.64, 148,990.08 and 70,261.12

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Solution

The fourth proportional to 108,000.64, 148,990.08 and 70,261.12 is: 96,927.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,000.64 : 148,990.08 = 70,261.12 : x
  2. Step 2: Convert to fraction form
    108,000.64/148,990.08 = 70,261.12/x
  3. Step 3: Cross multiply
    108,000.64x = 148,990.08 × 70,261.12
  4. Step 4: Simplify right side
    108,000.64x = 10,468,209,889.69
  5. Step 5: Solve for x
    x = 10,468,209,889.69/108,000.64
  6. Step 6: Final answer
    x = 96,927.29

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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.