Home / 100,780.10-151,040.55-61,295.30

Finding the Fourth Proportional to 100,780.10, 151,040.55 and 61,295.30

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Solution

The fourth proportional to 100,780.10, 151,040.55 and 61,295.30 is: 91,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,780.10 : 151,040.55 = 61,295.30 : x
  2. Step 2: Convert to fraction form
    100,780.10/151,040.55 = 61,295.30/x
  3. Step 3: Cross multiply
    100,780.10x = 151,040.55 × 61,295.30
  4. Step 4: Simplify right side
    100,780.10x = 9,258,075,824.42
  5. Step 5: Solve for x
    x = 9,258,075,824.42/100,780.10
  6. Step 6: Final answer
    x = 91,864.13

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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.