Home / 153,920.40-212,374.08-93,489.36

Finding the Fourth Proportional to 153,920.40, 212,374.08 and 93,489.36

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Solution

The fourth proportional to 153,920.40, 212,374.08 and 93,489.36 is: 128,993.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,920.40 : 212,374.08 = 93,489.36 : x
  2. Step 2: Convert to fraction form
    153,920.40/212,374.08 = 93,489.36/x
  3. Step 3: Cross multiply
    153,920.40x = 212,374.08 × 93,489.36
  4. Step 4: Simplify right side
    153,920.40x = 19,854,716,819.79
  5. Step 5: Solve for x
    x = 19,854,716,819.79/153,920.40
  6. Step 6: Final answer
    x = 128,993.41

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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.