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Finding the Fourth Proportional to 103,133.51, 154,700.40 and 28,254.30

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Solution

The fourth proportional to 103,133.51, 154,700.40 and 28,254.30 is: 42,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,133.51 : 154,700.40 = 28,254.30 : x
  2. Step 2: Convert to fraction form
    103,133.51/154,700.40 = 28,254.30/x
  3. Step 3: Cross multiply
    103,133.51x = 154,700.40 × 28,254.30
  4. Step 4: Simplify right side
    103,133.51x = 4,370,951,511.72
  5. Step 5: Solve for x
    x = 4,370,951,511.72/103,133.51
  6. Step 6: Final answer
    x = 42,381.49

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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.