Home / 103,185.48-142,426.36-67,381.08

Finding the Fourth Proportional to 103,185.48, 142,426.36 and 67,381.08

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Solution

The fourth proportional to 103,185.48, 142,426.36 and 67,381.08 is: 93,005.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,185.48 : 142,426.36 = 67,381.08 : x
  2. Step 2: Convert to fraction form
    103,185.48/142,426.36 = 67,381.08/x
  3. Step 3: Cross multiply
    103,185.48x = 142,426.36 × 67,381.08
  4. Step 4: Simplify right side
    103,185.48x = 9,596,841,957.27
  5. Step 5: Solve for x
    x = 9,596,841,957.27/103,185.48
  6. Step 6: Final answer
    x = 93,005.74

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1.5x scale

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.