Home / 102,130.91-140,937.28-56,807.62

Finding the Fourth Proportional to 102,130.91, 140,937.28 and 56,807.62

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Solution

The fourth proportional to 102,130.91, 140,937.28 and 56,807.62 is: 78,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,130.91 : 140,937.28 = 56,807.62 : x
  2. Step 2: Convert to fraction form
    102,130.91/140,937.28 = 56,807.62/x
  3. Step 3: Cross multiply
    102,130.91x = 140,937.28 × 56,807.62
  4. Step 4: Simplify right side
    102,130.91x = 8,006,311,446.07
  5. Step 5: Solve for x
    x = 8,006,311,446.07/102,130.91
  6. Step 6: Final answer
    x = 78,392.64

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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.