Home / 12,385,145.81-17,090,501.19-7,158,492.56

Finding the Fourth Proportional to 12,385,145.81, 17,090,501.19 and 7,158,492.56

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Solution

The fourth proportional to 12,385,145.81, 17,090,501.19 and 7,158,492.56 is: 9,878,141.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385,145.81 : 17,090,501.19 = 7,158,492.56 : x
  2. Step 2: Convert to fraction form
    12,385,145.81/17,090,501.19 = 7,158,492.56/x
  3. Step 3: Cross multiply
    12,385,145.81x = 17,090,501.19 × 7,158,492.56
  4. Step 4: Simplify right side
    12,385,145.81x = 122,342,225,631,168.06
  5. Step 5: Solve for x
    x = 122,342,225,631,168.06/12,385,145.81
  6. Step 6: Final answer
    x = 9,878,141.73

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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.