Home / 99,430.35-137,213.63-54,108.32

Finding the Fourth Proportional to 99,430.35, 137,213.63 and 54,108.32

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Solution

The fourth proportional to 99,430.35, 137,213.63 and 54,108.32 is: 74,669.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,430.35 : 137,213.63 = 54,108.32 : x
  2. Step 2: Convert to fraction form
    99,430.35/137,213.63 = 54,108.32/x
  3. Step 3: Cross multiply
    99,430.35x = 137,213.63 × 54,108.32
  4. Step 4: Simplify right side
    99,430.35x = 7,424,398,043.79
  5. Step 5: Solve for x
    x = 7,424,398,043.79/99,430.35
  6. Step 6: Final answer
    x = 74,669.33

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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.