Home / 153,688.87-212,091.55-85,710.14

Finding the Fourth Proportional to 153,688.87, 212,091.55 and 85,710.14

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Solution

The fourth proportional to 153,688.87, 212,091.55 and 85,710.14 is: 118,280.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,688.87 : 212,091.55 = 85,710.14 : x
  2. Step 2: Convert to fraction form
    153,688.87/212,091.55 = 85,710.14/x
  3. Step 3: Cross multiply
    153,688.87x = 212,091.55 × 85,710.14
  4. Step 4: Simplify right side
    153,688.87x = 18,178,395,168.58
  5. Step 5: Solve for x
    x = 18,178,395,168.58/153,688.87
  6. Step 6: Final answer
    x = 118,280.49

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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.