Home / 130,966.40-180,755.52-77,264.72

Finding the Fourth Proportional to 130,966.40, 180,755.52 and 77,264.72

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Solution

The fourth proportional to 130,966.40, 180,755.52 and 77,264.72 is: 106,638.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,966.40 : 180,755.52 = 77,264.72 : x
  2. Step 2: Convert to fraction form
    130,966.40/180,755.52 = 77,264.72/x
  3. Step 3: Cross multiply
    130,966.40x = 180,755.52 × 77,264.72
  4. Step 4: Simplify right side
    130,966.40x = 13,966,024,641.25
  5. Step 5: Solve for x
    x = 13,966,024,641.25/130,966.40
  6. Step 6: Final answer
    x = 106,638.23

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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.