Home / 118,701.16-163,809.54-64,985.28

Finding the Fourth Proportional to 118,701.16, 163,809.54 and 64,985.28

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Solution

The fourth proportional to 118,701.16, 163,809.54 and 64,985.28 is: 89,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.16 : 163,809.54 = 64,985.28 : x
  2. Step 2: Convert to fraction form
    118,701.16/163,809.54 = 64,985.28/x
  3. Step 3: Cross multiply
    118,701.16x = 163,809.54 × 64,985.28
  4. Step 4: Simplify right side
    118,701.16x = 10,645,208,823.57
  5. Step 5: Solve for x
    x = 10,645,208,823.57/118,701.16
  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.