Home / 103,547.18-155,117.78-53,660

Finding the Fourth Proportional to 103,547.18, 155,117.78 and 53,660

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Solution

The fourth proportional to 103,547.18, 155,117.78 and 53,660 is: 80,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,547.18 : 155,117.78 = 53,660 : x
  2. Step 2: Convert to fraction form
    103,547.18/155,117.78 = 53,660/x
  3. Step 3: Cross multiply
    103,547.18x = 155,117.78 × 53,660
  4. Step 4: Simplify right side
    103,547.18x = 8,323,620,208.95
  5. Step 5: Solve for x
    x = 8,323,620,208.95/103,547.18
  6. Step 6: Final answer
    x = 80,384.81

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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.