Home / 115,365.90-173,048.85-85,841.40

Finding the Fourth Proportional to 115,365.90, 173,048.85 and 85,841.40

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Solution

The fourth proportional to 115,365.90, 173,048.85 and 85,841.40 is: 128,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,365.90 : 173,048.85 = 85,841.40 : x
  2. Step 2: Convert to fraction form
    115,365.90/173,048.85 = 85,841.40/x
  3. Step 3: Cross multiply
    115,365.90x = 173,048.85 × 85,841.40
  4. Step 4: Simplify right side
    115,365.90x = 14,854,755,552.39
  5. Step 5: Solve for x
    x = 14,854,755,552.39/115,365.90
  6. Step 6: Final answer
    x = 128,762.10

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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.