Home / 115,501.40-173,252.10-78,103.70

Finding the Fourth Proportional to 115,501.40, 173,252.10 and 78,103.70

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Solution

The fourth proportional to 115,501.40, 173,252.10 and 78,103.70 is: 117,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,501.40 : 173,252.10 = 78,103.70 : x
  2. Step 2: Convert to fraction form
    115,501.40/173,252.10 = 78,103.70/x
  3. Step 3: Cross multiply
    115,501.40x = 173,252.10 × 78,103.70
  4. Step 4: Simplify right side
    115,501.40x = 13,531,630,042.77
  5. Step 5: Solve for x
    x = 13,531,630,042.77/115,501.40
  6. Step 6: Final answer
    x = 117,155.55

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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.