Home / 130,807.23-180,532.31-76,377.21

Finding the Fourth Proportional to 130,807.23, 180,532.31 and 76,377.21

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Solution

The fourth proportional to 130,807.23, 180,532.31 and 76,377.21 is: 105,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,807.23 : 180,532.31 = 76,377.21 : x
  2. Step 2: Convert to fraction form
    130,807.23/180,532.31 = 76,377.21/x
  3. Step 3: Cross multiply
    130,807.23x = 180,532.31 × 76,377.21
  4. Step 4: Simplify right side
    130,807.23x = 13,788,553,770.77
  5. Step 5: Solve for x
    x = 13,788,553,770.77/130,807.23
  6. Step 6: Final answer
    x = 105,411.25

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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.