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Finding the Fourth Proportional to 152,518.92, 210,427.98 and 87,979.47

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Solution

The fourth proportional to 152,518.92, 210,427.98 and 87,979.47 is: 121,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,518.92 : 210,427.98 = 87,979.47 : x
  2. Step 2: Convert to fraction form
    152,518.92/210,427.98 = 87,979.47/x
  3. Step 3: Cross multiply
    152,518.92x = 210,427.98 × 87,979.47
  4. Step 4: Simplify right side
    152,518.92x = 18,513,341,034.54
  5. Step 5: Solve for x
    x = 18,513,341,034.54/152,518.92
  6. Step 6: Final answer
    x = 121,383.90

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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.