Home / 103,005.36-142,135.65-57,677.04

Finding the Fourth Proportional to 103,005.36, 142,135.65 and 57,677.04

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Solution

The fourth proportional to 103,005.36, 142,135.65 and 57,677.04 is: 79,587.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,005.36 : 142,135.65 = 57,677.04 : x
  2. Step 2: Convert to fraction form
    103,005.36/142,135.65 = 57,677.04/x
  3. Step 3: Cross multiply
    103,005.36x = 142,135.65 × 57,677.04
  4. Step 4: Simplify right side
    103,005.36x = 8,197,963,570.48
  5. Step 5: Solve for x
    x = 8,197,963,570.48/103,005.36
  6. Step 6: Final answer
    x = 79,587.74

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1.5x scale

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.