Home / 106,980.13-147,637.65-64,537.75

Finding the Fourth Proportional to 106,980.13, 147,637.65 and 64,537.75

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Solution

The fourth proportional to 106,980.13, 147,637.65 and 64,537.75 is: 89,065.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,980.13 : 147,637.65 = 64,537.75 : x
  2. Step 2: Convert to fraction form
    106,980.13/147,637.65 = 64,537.75/x
  3. Step 3: Cross multiply
    106,980.13x = 147,637.65 × 64,537.75
  4. Step 4: Simplify right side
    106,980.13x = 9,528,201,746.29
  5. Step 5: Solve for x
    x = 9,528,201,746.29/106,980.13
  6. Step 6: Final answer
    x = 89,065.15

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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.