Home / 118,631.50-163,715.43-64,915.36

Finding the Fourth Proportional to 118,631.50, 163,715.43 and 64,915.36

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Solution

The fourth proportional to 118,631.50, 163,715.43 and 64,915.36 is: 89,585.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,631.50 : 163,715.43 = 64,915.36 : x
  2. Step 2: Convert to fraction form
    118,631.50/163,715.43 = 64,915.36/x
  3. Step 3: Cross multiply
    118,631.50x = 163,715.43 × 64,915.36
  4. Step 4: Simplify right side
    118,631.50x = 10,627,646,076.00
  5. Step 5: Solve for x
    x = 10,627,646,076.00/118,631.50
  6. Step 6: Final answer
    x = 89,585.36

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1.5x scale

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.