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Finding the Fourth Proportional to 100,130.58, 150,030 and 70,403.17

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Solution

The fourth proportional to 100,130.58, 150,030 and 70,403.17 is: 105,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,130.58 : 150,030 = 70,403.17 : x
  2. Step 2: Convert to fraction form
    100,130.58/150,030 = 70,403.17/x
  3. Step 3: Cross multiply
    100,130.58x = 150,030 × 70,403.17
  4. Step 4: Simplify right side
    100,130.58x = 10,562,587,595.10
  5. Step 5: Solve for x
    x = 10,562,587,595.10/100,130.58
  6. Step 6: Final answer
    x = 105,488.13

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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.