Home / 112,987.55-155,995.85-70,012.64

Finding the Fourth Proportional to 112,987.55, 155,995.85 and 70,012.64

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Solution

The fourth proportional to 112,987.55, 155,995.85 and 70,012.64 is: 96,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,987.55 : 155,995.85 = 70,012.64 : x
  2. Step 2: Convert to fraction form
    112,987.55/155,995.85 = 70,012.64/x
  3. Step 3: Cross multiply
    112,987.55x = 155,995.85 × 70,012.64
  4. Step 4: Simplify right side
    112,987.55x = 10,921,681,691.35
  5. Step 5: Solve for x
    x = 10,921,681,691.35/112,987.55
  6. Step 6: Final answer
    x = 96,662.70

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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.