Home / 130,931.98-180,702.99-79,934.02

Finding the Fourth Proportional to 130,931.98, 180,702.99 and 79,934.02

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Solution

The fourth proportional to 130,931.98, 180,702.99 and 79,934.02 is: 110,319.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,931.98 : 180,702.99 = 79,934.02 : x
  2. Step 2: Convert to fraction form
    130,931.98/180,702.99 = 79,934.02/x
  3. Step 3: Cross multiply
    130,931.98x = 180,702.99 × 79,934.02
  4. Step 4: Simplify right side
    130,931.98x = 14,444,316,416.72
  5. Step 5: Solve for x
    x = 14,444,316,416.72/130,931.98
  6. Step 6: Final answer
    x = 110,319.24

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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.