Home / 205,017.29-307,547.81-86,700.59

Finding the Fourth Proportional to 205,017.29, 307,547.81 and 86,700.59

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Solution

The fourth proportional to 205,017.29, 307,547.81 and 86,700.59 is: 130,060.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,017.29 : 307,547.81 = 86,700.59 : x
  2. Step 2: Convert to fraction form
    205,017.29/307,547.81 = 86,700.59/x
  3. Step 3: Cross multiply
    205,017.29x = 307,547.81 × 86,700.59
  4. Step 4: Simplify right side
    205,017.29x = 26,664,576,580.21
  5. Step 5: Solve for x
    x = 26,664,576,580.21/205,017.29
  6. Step 6: Final answer
    x = 130,060.14

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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.