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Finding the Fourth Proportional to 124,632.60, 186,948.90 and 45,720.60

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Solution

The fourth proportional to 124,632.60, 186,948.90 and 45,720.60 is: 68,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,632.60 : 186,948.90 = 45,720.60 : x
  2. Step 2: Convert to fraction form
    124,632.60/186,948.90 = 45,720.60/x
  3. Step 3: Cross multiply
    124,632.60x = 186,948.90 × 45,720.60
  4. Step 4: Simplify right side
    124,632.60x = 8,547,415,877.34
  5. Step 5: Solve for x
    x = 8,547,415,877.34/124,632.60
  6. Step 6: Final answer
    x = 68,580.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.