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Finding the Fourth Proportional to 151,365.87, 208,875.74 and 87,692.67

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Solution

The fourth proportional to 151,365.87, 208,875.74 and 87,692.67 is: 121,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,365.87 : 208,875.74 = 87,692.67 : x
  2. Step 2: Convert to fraction form
    151,365.87/208,875.74 = 87,692.67/x
  3. Step 3: Cross multiply
    151,365.87x = 208,875.74 × 87,692.67
  4. Step 4: Simplify right side
    151,365.87x = 18,316,870,900.36
  5. Step 5: Solve for x
    x = 18,316,870,900.36/151,365.87
  6. Step 6: Final answer
    x = 121,010.57

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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.