Home / 130,787.85-180,493.16-77,075.13

Finding the Fourth Proportional to 130,787.85, 180,493.16 and 77,075.13

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Solution

The fourth proportional to 130,787.85, 180,493.16 and 77,075.13 is: 106,367.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,787.85 : 180,493.16 = 77,075.13 : x
  2. Step 2: Convert to fraction form
    130,787.85/180,493.16 = 77,075.13/x
  3. Step 3: Cross multiply
    130,787.85x = 180,493.16 × 77,075.13
  4. Step 4: Simplify right side
    130,787.85x = 13,911,533,771.11
  5. Step 5: Solve for x
    x = 13,911,533,771.11/130,787.85
  6. Step 6: Final answer
    x = 106,367.17

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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.