Home / 153,475.28-211,828.56-103,145.12

Finding the Fourth Proportional to 153,475.28, 211,828.56 and 103,145.12

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Solution

The fourth proportional to 153,475.28, 211,828.56 and 103,145.12 is: 142,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,475.28 : 211,828.56 = 103,145.12 : x
  2. Step 2: Convert to fraction form
    153,475.28/211,828.56 = 103,145.12/x
  3. Step 3: Cross multiply
    153,475.28x = 211,828.56 × 103,145.12
  4. Step 4: Simplify right side
    153,475.28x = 21,849,082,240.63
  5. Step 5: Solve for x
    x = 21,849,082,240.63/153,475.28
  6. Step 6: Final answer
    x = 142,362.22

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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.