Home / 153,685.32-230,515.02-86,915.40

Finding the Fourth Proportional to 153,685.32, 230,515.02 and 86,915.40

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Solution

The fourth proportional to 153,685.32, 230,515.02 and 86,915.40 is: 130,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,685.32 : 230,515.02 = 86,915.40 : x
  2. Step 2: Convert to fraction form
    153,685.32/230,515.02 = 86,915.40/x
  3. Step 3: Cross multiply
    153,685.32x = 230,515.02 × 86,915.40
  4. Step 4: Simplify right side
    153,685.32x = 20,035,305,169.31
  5. Step 5: Solve for x
    x = 20,035,305,169.31/153,685.32
  6. Step 6: Final answer
    x = 130,365.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.