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Finding the Fourth Proportional to 98,223.60, 147,335.40 and 84,860.40

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Solution

The fourth proportional to 98,223.60, 147,335.40 and 84,860.40 is: 127,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,223.60 : 147,335.40 = 84,860.40 : x
  2. Step 2: Convert to fraction form
    98,223.60/147,335.40 = 84,860.40/x
  3. Step 3: Cross multiply
    98,223.60x = 147,335.40 × 84,860.40
  4. Step 4: Simplify right side
    98,223.60x = 12,502,940,978.16
  5. Step 5: Solve for x
    x = 12,502,940,978.16/98,223.60
  6. Step 6: Final answer
    x = 127,290.60

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1.5x scale

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.