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Finding the Fourth Proportional to 124,490.80, 171,790.60 and 70,768.40

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Solution

The fourth proportional to 124,490.80, 171,790.60 and 70,768.40 is: 97,656.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,490.80 : 171,790.60 = 70,768.40 : x
  2. Step 2: Convert to fraction form
    124,490.80/171,790.60 = 70,768.40/x
  3. Step 3: Cross multiply
    124,490.80x = 171,790.60 × 70,768.40
  4. Step 4: Simplify right side
    124,490.80x = 12,157,345,897.04
  5. Step 5: Solve for x
    x = 12,157,345,897.04/124,490.80
  6. Step 6: Final answer
    x = 97,656.58

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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.