Home / 140,132.16-209,822.40-87,436.80

Finding the Fourth Proportional to 140,132.16, 209,822.40 and 87,436.80

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Solution

The fourth proportional to 140,132.16, 209,822.40 and 87,436.80 is: 130,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,132.16 : 209,822.40 = 87,436.80 : x
  2. Step 2: Convert to fraction form
    140,132.16/209,822.40 = 87,436.80/x
  3. Step 3: Cross multiply
    140,132.16x = 209,822.40 × 87,436.80
  4. Step 4: Simplify right side
    140,132.16x = 18,346,199,224.32
  5. Step 5: Solve for x
    x = 18,346,199,224.32/140,132.16
  6. Step 6: Final answer
    x = 130,920.69

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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.