Home / 91,888.60-126,712.98-86,531.08

Finding the Fourth Proportional to 91,888.60, 126,712.98 and 86,531.08

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Solution

The fourth proportional to 91,888.60, 126,712.98 and 86,531.08 is: 119,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.60 : 126,712.98 = 86,531.08 : x
  2. Step 2: Convert to fraction form
    91,888.60/126,712.98 = 86,531.08/x
  3. Step 3: Cross multiply
    91,888.60x = 126,712.98 × 86,531.08
  4. Step 4: Simplify right side
    91,888.60x = 10,964,611,009.42
  5. Step 5: Solve for x
    x = 10,964,611,009.42/91,888.60
  6. Step 6: Final answer
    x = 119,325.04

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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.