Home / 105,439.30-157,962.12-70,403.56

Finding the Fourth Proportional to 105,439.30, 157,962.12 and 70,403.56

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Solution

The fourth proportional to 105,439.30, 157,962.12 and 70,403.56 is: 105,473.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,439.30 : 157,962.12 = 70,403.56 : x
  2. Step 2: Convert to fraction form
    105,439.30/157,962.12 = 70,403.56/x
  3. Step 3: Cross multiply
    105,439.30x = 157,962.12 × 70,403.56
  4. Step 4: Simplify right side
    105,439.30x = 11,121,095,593.15
  5. Step 5: Solve for x
    x = 11,121,095,593.15/105,439.30
  6. Step 6: Final answer
    x = 105,473.91

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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.