Home / 130,341.56-179,829.55-72,972.45

Finding the Fourth Proportional to 130,341.56, 179,829.55 and 72,972.45

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Solution

The fourth proportional to 130,341.56, 179,829.55 and 72,972.45 is: 100,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,341.56 : 179,829.55 = 72,972.45 : x
  2. Step 2: Convert to fraction form
    130,341.56/179,829.55 = 72,972.45/x
  3. Step 3: Cross multiply
    130,341.56x = 179,829.55 × 72,972.45
  4. Step 4: Simplify right side
    130,341.56x = 13,122,602,845.90
  5. Step 5: Solve for x
    x = 13,122,602,845.90/130,341.56
  6. Step 6: Final answer
    x = 100,678.58

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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.