Home / 209,987.20-314,898.90-91,577.80

Finding the Fourth Proportional to 209,987.20, 314,898.90 and 91,577.80

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Solution

The fourth proportional to 209,987.20, 314,898.90 and 91,577.80 is: 137,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,987.20 : 314,898.90 = 91,577.80 : x
  2. Step 2: Convert to fraction form
    209,987.20/314,898.90 = 91,577.80/x
  3. Step 3: Cross multiply
    209,987.20x = 314,898.90 × 91,577.80
  4. Step 4: Simplify right side
    209,987.20x = 28,837,748,484.42
  5. Step 5: Solve for x
    x = 28,837,748,484.42/209,987.20
  6. Step 6: Final answer
    x = 137,330.98

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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.