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Finding the Fourth Proportional to 130,804.88, 180,482.78 and 77,070.29

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Solution

The fourth proportional to 130,804.88, 180,482.78 and 77,070.29 is: 106,340.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,804.88 : 180,482.78 = 77,070.29 : x
  2. Step 2: Convert to fraction form
    130,804.88/180,482.78 = 77,070.29/x
  3. Step 3: Cross multiply
    130,804.88x = 180,482.78 × 77,070.29
  4. Step 4: Simplify right side
    130,804.88x = 13,909,859,484.87
  5. Step 5: Solve for x
    x = 13,909,859,484.87/130,804.88
  6. Step 6: Final answer
    x = 106,340.53

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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.