Home / 130,567.40-180,172.02-72,420.60

Finding the Fourth Proportional to 130,567.40, 180,172.02 and 72,420.60

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Solution

The fourth proportional to 130,567.40, 180,172.02 and 72,420.60 is: 99,934.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,567.40 : 180,172.02 = 72,420.60 : x
  2. Step 2: Convert to fraction form
    130,567.40/180,172.02 = 72,420.60/x
  3. Step 3: Cross multiply
    130,567.40x = 180,172.02 × 72,420.60
  4. Step 4: Simplify right side
    130,567.40x = 13,048,165,791.61
  5. Step 5: Solve for x
    x = 13,048,165,791.61/130,567.40
  6. Step 6: Final answer
    x = 99,934.33

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1.5x scale

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.