Home / 217,200.47-299,744.75-121,703.63

Finding the Fourth Proportional to 217,200.47, 299,744.75 and 121,703.63

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Solution

The fourth proportional to 217,200.47, 299,744.75 and 121,703.63 is: 167,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,200.47 : 299,744.75 = 121,703.63 : x
  2. Step 2: Convert to fraction form
    217,200.47/299,744.75 = 121,703.63/x
  3. Step 3: Cross multiply
    217,200.47x = 299,744.75 × 121,703.63
  4. Step 4: Simplify right side
    217,200.47x = 36,480,022,953.98
  5. Step 5: Solve for x
    x = 36,480,022,953.98/217,200.47
  6. Step 6: Final answer
    x = 167,955.55

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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.