Home / 153,985.20-212,564.40-93,575.28

Finding the Fourth Proportional to 153,985.20, 212,564.40 and 93,575.28

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Solution

The fourth proportional to 153,985.20, 212,564.40 and 93,575.28 is: 129,173.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,985.20 : 212,564.40 = 93,575.28 : x
  2. Step 2: Convert to fraction form
    153,985.20/212,564.40 = 93,575.28/x
  3. Step 3: Cross multiply
    153,985.20x = 212,564.40 × 93,575.28
  4. Step 4: Simplify right side
    153,985.20x = 19,890,773,248.03
  5. Step 5: Solve for x
    x = 19,890,773,248.03/153,985.20
  6. Step 6: Final answer
    x = 129,173.28

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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.