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Finding the Fourth Proportional to 105,881.52, 158,820.28 and 42,700.32

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Solution

The fourth proportional to 105,881.52, 158,820.28 and 42,700.32 is: 64,049.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,881.52 : 158,820.28 = 42,700.32 : x
  2. Step 2: Convert to fraction form
    105,881.52/158,820.28 = 42,700.32/x
  3. Step 3: Cross multiply
    105,881.52x = 158,820.28 × 42,700.32
  4. Step 4: Simplify right side
    105,881.52x = 6,781,676,778.49
  5. Step 5: Solve for x
    x = 6,781,676,778.49/105,881.52
  6. Step 6: Final answer
    x = 64,049.67

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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.