Home / 212,925.55-319,381.34-86,528.29

Finding the Fourth Proportional to 212,925.55, 319,381.34 and 86,528.29

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Solution

The fourth proportional to 212,925.55, 319,381.34 and 86,528.29 is: 129,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,925.55 : 319,381.34 = 86,528.29 : x
  2. Step 2: Convert to fraction form
    212,925.55/319,381.34 = 86,528.29/x
  3. Step 3: Cross multiply
    212,925.55x = 319,381.34 × 86,528.29
  4. Step 4: Simplify right side
    212,925.55x = 27,635,521,208.11
  5. Step 5: Solve for x
    x = 27,635,521,208.11/212,925.55
  6. Step 6: Final answer
    x = 129,789.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.