Home / 109,128.15-150,595.34-61,381.53

Finding the Fourth Proportional to 109,128.15, 150,595.34 and 61,381.53

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Solution

The fourth proportional to 109,128.15, 150,595.34 and 61,381.53 is: 84,705.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,128.15 : 150,595.34 = 61,381.53 : x
  2. Step 2: Convert to fraction form
    109,128.15/150,595.34 = 61,381.53/x
  3. Step 3: Cross multiply
    109,128.15x = 150,595.34 × 61,381.53
  4. Step 4: Simplify right side
    109,128.15x = 9,243,772,073.16
  5. Step 5: Solve for x
    x = 9,243,772,073.16/109,128.15
  6. Step 6: Final answer
    x = 84,705.66

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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.