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Finding the Fourth Proportional to 152,533.49, 210,503.93 and 87,978.71

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Solution

The fourth proportional to 152,533.49, 210,503.93 and 87,978.71 is: 121,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,533.49 : 210,503.93 = 87,978.71 : x
  2. Step 2: Convert to fraction form
    152,533.49/210,503.93 = 87,978.71/x
  3. Step 3: Cross multiply
    152,533.49x = 210,503.93 × 87,978.71
  4. Step 4: Simplify right side
    152,533.49x = 18,519,862,718.92
  5. Step 5: Solve for x
    x = 18,519,862,718.92/152,533.49
  6. Step 6: Final answer
    x = 121,415.06

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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.