Home / 108,145.40-148,156.72-104,102.30

Finding the Fourth Proportional to 108,145.40, 148,156.72 and 104,102.30

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Solution

The fourth proportional to 108,145.40, 148,156.72 and 104,102.30 is: 142,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,145.40 : 148,156.72 = 104,102.30 : x
  2. Step 2: Convert to fraction form
    108,145.40/148,156.72 = 104,102.30/x
  3. Step 3: Cross multiply
    108,145.40x = 148,156.72 × 104,102.30
  4. Step 4: Simplify right side
    108,145.40x = 15,423,455,312.46
  5. Step 5: Solve for x
    x = 15,423,455,312.46/108,145.40
  6. Step 6: Final answer
    x = 142,617.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.