Home / 86,420.20-119,314.92-70,542.40

Finding the Fourth Proportional to 86,420.20, 119,314.92 and 70,542.40

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Solution

The fourth proportional to 86,420.20, 119,314.92 and 70,542.40 is: 97,393.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,420.20 : 119,314.92 = 70,542.40 : x
  2. Step 2: Convert to fraction form
    86,420.20/119,314.92 = 70,542.40/x
  3. Step 3: Cross multiply
    86,420.20x = 119,314.92 × 70,542.40
  4. Step 4: Simplify right side
    86,420.20x = 8,416,760,812.61
  5. Step 5: Solve for x
    x = 8,416,760,812.61/86,420.20
  6. Step 6: Final answer
    x = 97,393.44

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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.