Home / 103,039.79-142,121.13-94,569.21

Finding the Fourth Proportional to 103,039.79, 142,121.13 and 94,569.21

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Solution

The fourth proportional to 103,039.79, 142,121.13 and 94,569.21 is: 130,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039.79 : 142,121.13 = 94,569.21 : x
  2. Step 2: Convert to fraction form
    103,039.79/142,121.13 = 94,569.21/x
  3. Step 3: Cross multiply
    103,039.79x = 142,121.13 × 94,569.21
  4. Step 4: Simplify right side
    103,039.79x = 13,440,282,988.41
  5. Step 5: Solve for x
    x = 13,440,282,988.41/103,039.79
  6. Step 6: Final answer
    x = 130,437.80

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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.