Home / 99,755.40-137,657.59-54,430.68

Finding the Fourth Proportional to 99,755.40, 137,657.59 and 54,430.68

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Solution

The fourth proportional to 99,755.40, 137,657.59 and 54,430.68 is: 75,111.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,755.40 : 137,657.59 = 54,430.68 : x
  2. Step 2: Convert to fraction form
    99,755.40/137,657.59 = 54,430.68/x
  3. Step 3: Cross multiply
    99,755.40x = 137,657.59 × 54,430.68
  4. Step 4: Simplify right side
    99,755.40x = 7,492,796,230.86
  5. Step 5: Solve for x
    x = 7,492,796,230.86/99,755.40
  6. Step 6: Final answer
    x = 75,111.69

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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.