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Finding the Fourth Proportional to 157,029.10, 216,721.16 and 89,070.70

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Solution

The fourth proportional to 157,029.10, 216,721.16 and 89,070.70 is: 122,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,029.10 : 216,721.16 = 89,070.70 : x
  2. Step 2: Convert to fraction form
    157,029.10/216,721.16 = 89,070.70/x
  3. Step 3: Cross multiply
    157,029.10x = 216,721.16 × 89,070.70
  4. Step 4: Simplify right side
    157,029.10x = 19,303,505,426.01
  5. Step 5: Solve for x
    x = 19,303,505,426.01/157,029.10
  6. Step 6: Final answer
    x = 122,929.48

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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.