Home / 112,979.23-155,904.62-64,586.39

Finding the Fourth Proportional to 112,979.23, 155,904.62 and 64,586.39

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Solution

The fourth proportional to 112,979.23, 155,904.62 and 64,586.39 is: 89,125.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.23 : 155,904.62 = 64,586.39 : x
  2. Step 2: Convert to fraction form
    112,979.23/155,904.62 = 64,586.39/x
  3. Step 3: Cross multiply
    112,979.23x = 155,904.62 × 64,586.39
  4. Step 4: Simplify right side
    112,979.23x = 10,069,315,487.67
  5. Step 5: Solve for x
    x = 10,069,315,487.67/112,979.23
  6. Step 6: Final answer
    x = 89,125.37

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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.