Home / 130,369.12-179,909.42-70,753.12

Finding the Fourth Proportional to 130,369.12, 179,909.42 and 70,753.12

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Solution

The fourth proportional to 130,369.12, 179,909.42 and 70,753.12 is: 97,639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,369.12 : 179,909.42 = 70,753.12 : x
  2. Step 2: Convert to fraction form
    130,369.12/179,909.42 = 70,753.12/x
  3. Step 3: Cross multiply
    130,369.12x = 179,909.42 × 70,753.12
  4. Step 4: Simplify right side
    130,369.12x = 12,729,152,782.39
  5. Step 5: Solve for x
    x = 12,729,152,782.39/130,369.12
  6. Step 6: Final answer
    x = 97,639.32

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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.