Home / 118,619.13-163,678.27-70,862.34

Finding the Fourth Proportional to 118,619.13, 163,678.27 and 70,862.34

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Solution

The fourth proportional to 118,619.13, 163,678.27 and 70,862.34 is: 97,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,619.13 : 163,678.27 = 70,862.34 : x
  2. Step 2: Convert to fraction form
    118,619.13/163,678.27 = 70,862.34/x
  3. Step 3: Cross multiply
    118,619.13x = 163,678.27 × 70,862.34
  4. Step 4: Simplify right side
    118,619.13x = 11,598,625,788.86
  5. Step 5: Solve for x
    x = 11,598,625,788.86/118,619.13
  6. Step 6: Final answer
    x = 97,780.40

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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.