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Finding the Fourth Proportional to 157,015.54, 216,676.81 and 89,038.70

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Solution

The fourth proportional to 157,015.54, 216,676.81 and 89,038.70 is: 122,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,015.54 : 216,676.81 = 89,038.70 : x
  2. Step 2: Convert to fraction form
    157,015.54/216,676.81 = 89,038.70/x
  3. Step 3: Cross multiply
    157,015.54x = 216,676.81 × 89,038.70
  4. Step 4: Simplify right side
    157,015.54x = 19,292,621,482.55
  5. Step 5: Solve for x
    x = 19,292,621,482.55/157,015.54
  6. Step 6: Final answer
    x = 122,870.78

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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.