Home / 86,335.36-129,503.04-81,462.40

Finding the Fourth Proportional to 86,335.36, 129,503.04 and 81,462.40

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Solution

The fourth proportional to 86,335.36, 129,503.04 and 81,462.40 is: 122,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,335.36 : 129,503.04 = 81,462.40 : x
  2. Step 2: Convert to fraction form
    86,335.36/129,503.04 = 81,462.40/x
  3. Step 3: Cross multiply
    86,335.36x = 129,503.04 × 81,462.40
  4. Step 4: Simplify right side
    86,335.36x = 10,549,628,445.70
  5. Step 5: Solve for x
    x = 10,549,628,445.70/86,335.36
  6. Step 6: Final answer
    x = 122,193.60

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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.