Home / 131,465.36-181,459.35-77,769.05

Finding the Fourth Proportional to 131,465.36, 181,459.35 and 77,769.05

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Solution

The fourth proportional to 131,465.36, 181,459.35 and 77,769.05 is: 107,343.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,465.36 : 181,459.35 = 77,769.05 : x
  2. Step 2: Convert to fraction form
    131,465.36/181,459.35 = 77,769.05/x
  3. Step 3: Cross multiply
    131,465.36x = 181,459.35 × 77,769.05
  4. Step 4: Simplify right side
    131,465.36x = 14,111,920,355.82
  5. Step 5: Solve for x
    x = 14,111,920,355.82/131,465.36
  6. Step 6: Final answer
    x = 107,343.26

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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.