Home / 103,929.64-143,434.02-63,670.12

Finding the Fourth Proportional to 103,929.64, 143,434.02 and 63,670.12

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Solution

The fourth proportional to 103,929.64, 143,434.02 and 63,670.12 is: 87,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,929.64 : 143,434.02 = 63,670.12 : x
  2. Step 2: Convert to fraction form
    103,929.64/143,434.02 = 63,670.12/x
  3. Step 3: Cross multiply
    103,929.64x = 143,434.02 × 63,670.12
  4. Step 4: Simplify right side
    103,929.64x = 9,132,461,265.48
  5. Step 5: Solve for x
    x = 9,132,461,265.48/103,929.64
  6. Step 6: Final answer
    x = 87,871.58

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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.