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Finding the Fourth Proportional to 130,691.94, 180,353.55 and 71,075.94

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Solution

The fourth proportional to 130,691.94, 180,353.55 and 71,075.94 is: 98,084.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,691.94 : 180,353.55 = 71,075.94 : x
  2. Step 2: Convert to fraction form
    130,691.94/180,353.55 = 71,075.94/x
  3. Step 3: Cross multiply
    130,691.94x = 180,353.55 × 71,075.94
  4. Step 4: Simplify right side
    130,691.94x = 12,818,798,098.59
  5. Step 5: Solve for x
    x = 12,818,798,098.59/130,691.94
  6. Step 6: Final answer
    x = 98,084.08

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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.