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Finding the Fourth Proportional to 153,419.35, 211,675.92 and 98,948.47

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Solution

The fourth proportional to 153,419.35, 211,675.92 and 98,948.47 is: 136,521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,419.35 : 211,675.92 = 98,948.47 : x
  2. Step 2: Convert to fraction form
    153,419.35/211,675.92 = 98,948.47/x
  3. Step 3: Cross multiply
    153,419.35x = 211,675.92 × 98,948.47
  4. Step 4: Simplify right side
    153,419.35x = 20,945,007,361.46
  5. Step 5: Solve for x
    x = 20,945,007,361.46/153,419.35
  6. Step 6: Final answer
    x = 136,521.29

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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.