Home / 123,730.26-170,745.93-72,748.72

Finding the Fourth Proportional to 123,730.26, 170,745.93 and 72,748.72

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Solution

The fourth proportional to 123,730.26, 170,745.93 and 72,748.72 is: 100,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,730.26 : 170,745.93 = 72,748.72 : x
  2. Step 2: Convert to fraction form
    123,730.26/170,745.93 = 72,748.72/x
  3. Step 3: Cross multiply
    123,730.26x = 170,745.93 × 72,748.72
  4. Step 4: Simplify right side
    123,730.26x = 12,421,547,852.71
  5. Step 5: Solve for x
    x = 12,421,547,852.71/123,730.26
  6. Step 6: Final answer
    x = 100,392.16

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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.