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Finding the Fourth Proportional to 142,726.88, 213,929.94 and 67,785.68

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Solution

The fourth proportional to 142,726.88, 213,929.94 and 67,785.68 is: 101,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,726.88 : 213,929.94 = 67,785.68 : x
  2. Step 2: Convert to fraction form
    142,726.88/213,929.94 = 67,785.68/x
  3. Step 3: Cross multiply
    142,726.88x = 213,929.94 × 67,785.68
  4. Step 4: Simplify right side
    142,726.88x = 14,501,386,455.26
  5. Step 5: Solve for x
    x = 14,501,386,455.26/142,726.88
  6. Step 6: Final answer
    x = 101,602.35

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1.5x scale

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.