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Finding the Fourth Proportional to 124,295.20, 186,442.80 and 123,420.40

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Solution

The fourth proportional to 124,295.20, 186,442.80 and 123,420.40 is: 185,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,295.20 : 186,442.80 = 123,420.40 : x
  2. Step 2: Convert to fraction form
    124,295.20/186,442.80 = 123,420.40/x
  3. Step 3: Cross multiply
    124,295.20x = 186,442.80 × 123,420.40
  4. Step 4: Simplify right side
    124,295.20x = 23,010,844,953.12
  5. Step 5: Solve for x
    x = 23,010,844,953.12/124,295.20
  6. Step 6: Final answer
    x = 185,130.60

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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.