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Finding the Fourth Proportional to 124,540.16, 171,870.36 and 70,830.08

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Solution

The fourth proportional to 124,540.16, 171,870.36 and 70,830.08 is: 97,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,540.16 : 171,870.36 = 70,830.08 : x
  2. Step 2: Convert to fraction form
    124,540.16/171,870.36 = 70,830.08/x
  3. Step 3: Cross multiply
    124,540.16x = 171,870.36 × 70,830.08
  4. Step 4: Simplify right side
    124,540.16x = 12,173,591,348.43
  5. Step 5: Solve for x
    x = 12,173,591,348.43/124,540.16
  6. Step 6: Final answer
    x = 97,748.32

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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.