Home / 157,221.81-216,955.14-89,240.17

Finding the Fourth Proportional to 157,221.81, 216,955.14 and 89,240.17

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Solution

The fourth proportional to 157,221.81, 216,955.14 and 89,240.17 is: 123,145.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,221.81 : 216,955.14 = 89,240.17 : x
  2. Step 2: Convert to fraction form
    157,221.81/216,955.14 = 89,240.17/x
  3. Step 3: Cross multiply
    157,221.81x = 216,955.14 × 89,240.17
  4. Step 4: Simplify right side
    157,221.81x = 19,361,113,575.97
  5. Step 5: Solve for x
    x = 19,361,113,575.97/157,221.81
  6. Step 6: Final answer
    x = 123,145.21

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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.