Home / 145,041.08-217,561.32-81,832.51

Finding the Fourth Proportional to 145,041.08, 217,561.32 and 81,832.51

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Solution

The fourth proportional to 145,041.08, 217,561.32 and 81,832.51 is: 122,748.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,041.08 : 217,561.32 = 81,832.51 : x
  2. Step 2: Convert to fraction form
    145,041.08/217,561.32 = 81,832.51/x
  3. Step 3: Cross multiply
    145,041.08x = 217,561.32 × 81,832.51
  4. Step 4: Simplify right side
    145,041.08x = 17,803,588,894.51
  5. Step 5: Solve for x
    x = 17,803,588,894.51/145,041.08
  6. Step 6: Final answer
    x = 122,748.60

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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.