Home / 138,302.37-190,866.78-77,058.18

Finding the Fourth Proportional to 138,302.37, 190,866.78 and 77,058.18

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Solution

The fourth proportional to 138,302.37, 190,866.78 and 77,058.18 is: 106,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,302.37 : 190,866.78 = 77,058.18 : x
  2. Step 2: Convert to fraction form
    138,302.37/190,866.78 = 77,058.18/x
  3. Step 3: Cross multiply
    138,302.37x = 190,866.78 × 77,058.18
  4. Step 4: Simplify right side
    138,302.37x = 14,707,846,689.26
  5. Step 5: Solve for x
    x = 14,707,846,689.26/138,302.37
  6. Step 6: Final answer
    x = 106,345.59

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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.