Home / 85,075.20-127,612.80-73,265.40

Finding the Fourth Proportional to 85,075.20, 127,612.80 and 73,265.40

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Solution

The fourth proportional to 85,075.20, 127,612.80 and 73,265.40 is: 109,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,075.20 : 127,612.80 = 73,265.40 : x
  2. Step 2: Convert to fraction form
    85,075.20/127,612.80 = 73,265.40/x
  3. Step 3: Cross multiply
    85,075.20x = 127,612.80 × 73,265.40
  4. Step 4: Simplify right side
    85,075.20x = 9,349,602,837.12
  5. Step 5: Solve for x
    x = 9,349,602,837.12/85,075.20
  6. Step 6: Final answer
    x = 109,898.10

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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.