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Finding the Fourth Proportional to 157,028.60, 216,720.48 and 89,070.21

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Solution

The fourth proportional to 157,028.60, 216,720.48 and 89,070.21 is: 122,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,028.60 : 216,720.48 = 89,070.21 : x
  2. Step 2: Convert to fraction form
    157,028.60/216,720.48 = 89,070.21/x
  3. Step 3: Cross multiply
    157,028.60x = 216,720.48 × 89,070.21
  4. Step 4: Simplify right side
    157,028.60x = 19,303,338,664.90
  5. Step 5: Solve for x
    x = 19,303,338,664.90/157,028.60
  6. Step 6: Final answer
    x = 122,928.81

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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.