Home / 115,330.40-159,152.34-67,615.53

Finding the Fourth Proportional to 115,330.40, 159,152.34 and 67,615.53

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Solution

The fourth proportional to 115,330.40, 159,152.34 and 67,615.53 is: 93,307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,330.40 : 159,152.34 = 67,615.53 : x
  2. Step 2: Convert to fraction form
    115,330.40/159,152.34 = 67,615.53/x
  3. Step 3: Cross multiply
    115,330.40x = 159,152.34 × 67,615.53
  4. Step 4: Simplify right side
    115,330.40x = 10,761,169,024.08
  5. Step 5: Solve for x
    x = 10,761,169,024.08/115,330.40
  6. Step 6: Final answer
    x = 93,307.31

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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.