Home / 130,767.78-180,498.06-77,070.18

Finding the Fourth Proportional to 130,767.78, 180,498.06 and 77,070.18

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Solution

The fourth proportional to 130,767.78, 180,498.06 and 77,070.18 is: 106,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,767.78 : 180,498.06 = 77,070.18 : x
  2. Step 2: Convert to fraction form
    130,767.78/180,498.06 = 77,070.18/x
  3. Step 3: Cross multiply
    130,767.78x = 180,498.06 × 77,070.18
  4. Step 4: Simplify right side
    130,767.78x = 13,911,017,973.85
  5. Step 5: Solve for x
    x = 13,911,017,973.85/130,767.78
  6. Step 6: Final answer
    x = 106,379.55

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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.