Home / 86,763.60-130,145.40-72,001.35

Finding the Fourth Proportional to 86,763.60, 130,145.40 and 72,001.35

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Solution

The fourth proportional to 86,763.60, 130,145.40 and 72,001.35 is: 108,002.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,763.60 : 130,145.40 = 72,001.35 : x
  2. Step 2: Convert to fraction form
    86,763.60/130,145.40 = 72,001.35/x
  3. Step 3: Cross multiply
    86,763.60x = 130,145.40 × 72,001.35
  4. Step 4: Simplify right side
    86,763.60x = 9,370,644,496.29
  5. Step 5: Solve for x
    x = 9,370,644,496.29/86,763.60
  6. Step 6: Final answer
    x = 108,002.03

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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.