Home / 109,420.53-151,038-64,113.18

Finding the Fourth Proportional to 109,420.53, 151,038 and 64,113.18

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Solution

The fourth proportional to 109,420.53, 151,038 and 64,113.18 is: 88,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,420.53 : 151,038 = 64,113.18 : x
  2. Step 2: Convert to fraction form
    109,420.53/151,038 = 64,113.18/x
  3. Step 3: Cross multiply
    109,420.53x = 151,038 × 64,113.18
  4. Step 4: Simplify right side
    109,420.53x = 9,683,526,480.84
  5. Step 5: Solve for x
    x = 9,683,526,480.84/109,420.53
  6. Step 6: Final answer
    x = 88,498.26

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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.