Home / 131,459.67-181,451.51-77,763.35

Finding the Fourth Proportional to 131,459.67, 181,451.51 and 77,763.35

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Solution

The fourth proportional to 131,459.67, 181,451.51 and 77,763.35 is: 107,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,459.67 : 181,451.51 = 77,763.35 : x
  2. Step 2: Convert to fraction form
    131,459.67/181,451.51 = 77,763.35/x
  3. Step 3: Cross multiply
    131,459.67x = 181,451.51 × 77,763.35
  4. Step 4: Simplify right side
    131,459.67x = 14,110,276,891.34
  5. Step 5: Solve for x
    x = 14,110,276,891.34/131,459.67
  6. Step 6: Final answer
    x = 107,335.40

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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.