Home / 130,677.98-180,398.97-87,641.73

Finding the Fourth Proportional to 130,677.98, 180,398.97 and 87,641.73

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Solution

The fourth proportional to 130,677.98, 180,398.97 and 87,641.73 is: 120,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,677.98 : 180,398.97 = 87,641.73 : x
  2. Step 2: Convert to fraction form
    130,677.98/180,398.97 = 87,641.73/x
  3. Step 3: Cross multiply
    130,677.98x = 180,398.97 × 87,641.73
  4. Step 4: Simplify right side
    130,677.98x = 15,810,477,821.02
  5. Step 5: Solve for x
    x = 15,810,477,821.02/130,677.98
  6. Step 6: Final answer
    x = 120,988.08

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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.