Home / 153,431.02-211,800.28-103,159.18

Finding the Fourth Proportional to 153,431.02, 211,800.28 and 103,159.18

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Solution

The fourth proportional to 153,431.02, 211,800.28 and 103,159.18 is: 142,403.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,431.02 : 211,800.28 = 103,159.18 : x
  2. Step 2: Convert to fraction form
    153,431.02/211,800.28 = 103,159.18/x
  3. Step 3: Cross multiply
    153,431.02x = 211,800.28 × 103,159.18
  4. Step 4: Simplify right side
    153,431.02x = 21,849,143,208.57
  5. Step 5: Solve for x
    x = 21,849,143,208.57/153,431.02
  6. Step 6: Final answer
    x = 142,403.69

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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.