Home / 112,430.96-155,176.50-72,195.56

Finding the Fourth Proportional to 112,430.96, 155,176.50 and 72,195.56

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Solution

The fourth proportional to 112,430.96, 155,176.50 and 72,195.56 is: 99,643.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,430.96 : 155,176.50 = 72,195.56 : x
  2. Step 2: Convert to fraction form
    112,430.96/155,176.50 = 72,195.56/x
  3. Step 3: Cross multiply
    112,430.96x = 155,176.50 × 72,195.56
  4. Step 4: Simplify right side
    112,430.96x = 11,203,054,316.34
  5. Step 5: Solve for x
    x = 11,203,054,316.34/112,430.96
  6. Step 6: Final answer
    x = 99,643.86

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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.