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Finding the Fourth Proportional to 124,140.60, 186,210.90 and 45,257.40

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Solution

The fourth proportional to 124,140.60, 186,210.90 and 45,257.40 is: 67,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,140.60 : 186,210.90 = 45,257.40 : x
  2. Step 2: Convert to fraction form
    124,140.60/186,210.90 = 45,257.40/x
  3. Step 3: Cross multiply
    124,140.60x = 186,210.90 × 45,257.40
  4. Step 4: Simplify right side
    124,140.60x = 8,427,421,185.66
  5. Step 5: Solve for x
    x = 8,427,421,185.66/124,140.60
  6. Step 6: Final answer
    x = 67,886.10

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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.