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Finding the Fourth Proportional to 130,045.40, 195,068.10 and 128,077.10

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Solution

The fourth proportional to 130,045.40, 195,068.10 and 128,077.10 is: 192,115.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,045.40 : 195,068.10 = 128,077.10 : x
  2. Step 2: Convert to fraction form
    130,045.40/195,068.10 = 128,077.10/x
  3. Step 3: Cross multiply
    130,045.40x = 195,068.10 × 128,077.10
  4. Step 4: Simplify right side
    130,045.40x = 24,983,756,550.51
  5. Step 5: Solve for x
    x = 24,983,756,550.51/130,045.40
  6. Step 6: Final answer
    x = 192,115.65

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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.