Home / 129,058.16-193,275.72-77,618.90

Finding the Fourth Proportional to 129,058.16, 193,275.72 and 77,618.90

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Solution

The fourth proportional to 129,058.16, 193,275.72 and 77,618.90 is: 116,240.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,058.16 : 193,275.72 = 77,618.90 : x
  2. Step 2: Convert to fraction form
    129,058.16/193,275.72 = 77,618.90/x
  3. Step 3: Cross multiply
    129,058.16x = 193,275.72 × 77,618.90
  4. Step 4: Simplify right side
    129,058.16x = 15,001,848,783.11
  5. Step 5: Solve for x
    x = 15,001,848,783.11/129,058.16
  6. Step 6: Final answer
    x = 116,240.99

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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.