Home / 115,605.20-173,407.80-75,688.40

Finding the Fourth Proportional to 115,605.20, 173,407.80 and 75,688.40

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Solution

The fourth proportional to 115,605.20, 173,407.80 and 75,688.40 is: 113,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,605.20 : 173,407.80 = 75,688.40 : x
  2. Step 2: Convert to fraction form
    115,605.20/173,407.80 = 75,688.40/x
  3. Step 3: Cross multiply
    115,605.20x = 173,407.80 × 75,688.40
  4. Step 4: Simplify right side
    115,605.20x = 13,124,958,929.52
  5. Step 5: Solve for x
    x = 13,124,958,929.52/115,605.20
  6. Step 6: Final answer
    x = 113,532.60

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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.