Home / 185,711.40-278,567.10-67,386.60

Finding the Fourth Proportional to 185,711.40, 278,567.10 and 67,386.60

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Solution

The fourth proportional to 185,711.40, 278,567.10 and 67,386.60 is: 101,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,711.40 : 278,567.10 = 67,386.60 : x
  2. Step 2: Convert to fraction form
    185,711.40/278,567.10 = 67,386.60/x
  3. Step 3: Cross multiply
    185,711.40x = 278,567.10 × 67,386.60
  4. Step 4: Simplify right side
    185,711.40x = 18,771,689,740.86
  5. Step 5: Solve for x
    x = 18,771,689,740.86/185,711.40
  6. Step 6: Final answer
    x = 101,079.90

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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.