Home / 102,320.79-141,195.39-56,378.40

Finding the Fourth Proportional to 102,320.79, 141,195.39 and 56,378.40

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Solution

The fourth proportional to 102,320.79, 141,195.39 and 56,378.40 is: 77,798.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,320.79 : 141,195.39 = 56,378.40 : x
  2. Step 2: Convert to fraction form
    102,320.79/141,195.39 = 56,378.40/x
  3. Step 3: Cross multiply
    102,320.79x = 141,195.39 × 56,378.40
  4. Step 4: Simplify right side
    102,320.79x = 7,960,370,175.58
  5. Step 5: Solve for x
    x = 7,960,370,175.58/102,320.79
  6. Step 6: Final answer
    x = 77,798.17

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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.