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Finding the Fourth Proportional to 157,186.64, 216,927.24 and 90,140.24

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Solution

The fourth proportional to 157,186.64, 216,927.24 and 90,140.24 is: 124,399.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,186.64 : 216,927.24 = 90,140.24 : x
  2. Step 2: Convert to fraction form
    157,186.64/216,927.24 = 90,140.24/x
  3. Step 3: Cross multiply
    157,186.64x = 216,927.24 × 90,140.24
  4. Step 4: Simplify right side
    157,186.64x = 19,553,873,476.14
  5. Step 5: Solve for x
    x = 19,553,873,476.14/157,186.64
  6. Step 6: Final answer
    x = 124,399.08

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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.