Home / 260,106.90-390,063.15-102,302.70

Finding the Fourth Proportional to 260,106.90, 390,063.15 and 102,302.70

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Solution

The fourth proportional to 260,106.90, 390,063.15 and 102,302.70 is: 153,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,106.90 : 390,063.15 = 102,302.70 : x
  2. Step 2: Convert to fraction form
    260,106.90/390,063.15 = 102,302.70/x
  3. Step 3: Cross multiply
    260,106.90x = 390,063.15 × 102,302.70
  4. Step 4: Simplify right side
    260,106.90x = 39,904,513,415.51
  5. Step 5: Solve for x
    x = 39,904,513,415.51/260,106.90
  6. Step 6: Final answer
    x = 153,415.82

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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.