Home / 130,899.61-180,641.48-72,756.35

Finding the Fourth Proportional to 130,899.61, 180,641.48 and 72,756.35

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Solution

The fourth proportional to 130,899.61, 180,641.48 and 72,756.35 is: 100,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,899.61 : 180,641.48 = 72,756.35 : x
  2. Step 2: Convert to fraction form
    130,899.61/180,641.48 = 72,756.35/x
  3. Step 3: Cross multiply
    130,899.61x = 180,641.48 × 72,756.35
  4. Step 4: Simplify right side
    130,899.61x = 13,142,814,743.40
  5. Step 5: Solve for x
    x = 13,142,814,743.40/130,899.61
  6. Step 6: Final answer
    x = 100,403.77

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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.