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Finding the Fourth Proportional to 124,389.68, 186,460.56 and 99,472.40

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Solution

The fourth proportional to 124,389.68, 186,460.56 and 99,472.40 is: 149,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,389.68 : 186,460.56 = 99,472.40 : x
  2. Step 2: Convert to fraction form
    124,389.68/186,460.56 = 99,472.40/x
  3. Step 3: Cross multiply
    124,389.68x = 186,460.56 × 99,472.40
  4. Step 4: Simplify right side
    124,389.68x = 18,547,679,408.54
  5. Step 5: Solve for x
    x = 18,547,679,408.54/124,389.68
  6. Step 6: Final answer
    x = 149,109.47

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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.