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Finding the Fourth Proportional to 130,129.70, 181,948.30 and 130,129.70

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Solution

The fourth proportional to 130,129.70, 181,948.30 and 130,129.70 is: 181,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,129.70 : 181,948.30 = 130,129.70 : x
  2. Step 2: Convert to fraction form
    130,129.70/181,948.30 = 130,129.70/x
  3. Step 3: Cross multiply
    130,129.70x = 181,948.30 × 130,129.70
  4. Step 4: Simplify right side
    130,129.70x = 23,676,877,694.51
  5. Step 5: Solve for x
    x = 23,676,877,694.51/130,129.70
  6. Step 6: Final answer
    x = 181,948.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.