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Finding the Fourth Proportional to 152,319.28, 210,200.58 and 85,251.28

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Solution

The fourth proportional to 152,319.28, 210,200.58 and 85,251.28 is: 117,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,319.28 : 210,200.58 = 85,251.28 : x
  2. Step 2: Convert to fraction form
    152,319.28/210,200.58 = 85,251.28/x
  3. Step 3: Cross multiply
    152,319.28x = 210,200.58 × 85,251.28
  4. Step 4: Simplify right side
    152,319.28x = 17,919,868,501.74
  5. Step 5: Solve for x
    x = 17,919,868,501.74/152,319.28
  6. Step 6: Final answer
    x = 117,646.75

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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.