Home / 153,926.60-212,419.56-90,265.40

Finding the Fourth Proportional to 153,926.60, 212,419.56 and 90,265.40

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Solution

The fourth proportional to 153,926.60, 212,419.56 and 90,265.40 is: 124,566.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,926.60 : 212,419.56 = 90,265.40 : x
  2. Step 2: Convert to fraction form
    153,926.60/212,419.56 = 90,265.40/x
  3. Step 3: Cross multiply
    153,926.60x = 212,419.56 × 90,265.40
  4. Step 4: Simplify right side
    153,926.60x = 19,174,136,551.22
  5. Step 5: Solve for x
    x = 19,174,136,551.22/153,926.60
  6. Step 6: Final answer
    x = 124,566.75

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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.