Home / 118,701.18-163,809.57-64,985.28

Finding the Fourth Proportional to 118,701.18, 163,809.57 and 64,985.28

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Solution

The fourth proportional to 118,701.18, 163,809.57 and 64,985.28 is: 89,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.18 : 163,809.57 = 64,985.28 : x
  2. Step 2: Convert to fraction form
    118,701.18/163,809.57 = 64,985.28/x
  3. Step 3: Cross multiply
    118,701.18x = 163,809.57 × 64,985.28
  4. Step 4: Simplify right side
    118,701.18x = 10,645,210,773.13
  5. Step 5: Solve for x
    x = 10,645,210,773.13/118,701.18
  6. Step 6: Final answer
    x = 89,680.75

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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.