Home / 103,457.15-155,294.31-91,686.23

Finding the Fourth Proportional to 103,457.15, 155,294.31 and 91,686.23

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Solution

The fourth proportional to 103,457.15, 155,294.31 and 91,686.23 is: 137,625.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,457.15 : 155,294.31 = 91,686.23 : x
  2. Step 2: Convert to fraction form
    103,457.15/155,294.31 = 91,686.23/x
  3. Step 3: Cross multiply
    103,457.15x = 155,294.31 × 91,686.23
  4. Step 4: Simplify right side
    103,457.15x = 14,238,349,974.06
  5. Step 5: Solve for x
    x = 14,238,349,974.06/103,457.15
  6. Step 6: Final answer
    x = 137,625.58

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1.5x scale

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.