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Finding the Fourth Proportional to 112,619, 155,415.34 and 62,319.08

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Solution

The fourth proportional to 112,619, 155,415.34 and 62,319.08 is: 86,000.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,619 : 155,415.34 = 62,319.08 : x
  2. Step 2: Convert to fraction form
    112,619/155,415.34 = 62,319.08/x
  3. Step 3: Cross multiply
    112,619x = 155,415.34 × 62,319.08
  4. Step 4: Simplify right side
    112,619x = 9,685,341,006.69
  5. Step 5: Solve for x
    x = 9,685,341,006.69/112,619
  6. Step 6: Final answer
    x = 86,000.95

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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.