Home / 102,132.09-153,068.40-45,912.15

Finding the Fourth Proportional to 102,132.09, 153,068.40 and 45,912.15

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Solution

The fourth proportional to 102,132.09, 153,068.40 and 45,912.15 is: 68,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,132.09 : 153,068.40 = 45,912.15 : x
  2. Step 2: Convert to fraction form
    102,132.09/153,068.40 = 45,912.15/x
  3. Step 3: Cross multiply
    102,132.09x = 153,068.40 × 45,912.15
  4. Step 4: Simplify right side
    102,132.09x = 7,027,699,341.06
  5. Step 5: Solve for x
    x = 7,027,699,341.06/102,132.09
  6. Step 6: Final answer
    x = 68,809.90

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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.