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Finding the Fourth Proportional to 109,901.80, 151,670.88 and 61,503.32

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Solution

The fourth proportional to 109,901.80, 151,670.88 and 61,503.32 is: 84,878.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,901.80 : 151,670.88 = 61,503.32 : x
  2. Step 2: Convert to fraction form
    109,901.80/151,670.88 = 61,503.32/x
  3. Step 3: Cross multiply
    109,901.80x = 151,670.88 × 61,503.32
  4. Step 4: Simplify right side
    109,901.80x = 9,328,262,513.28
  5. Step 5: Solve for x
    x = 9,328,262,513.28/109,901.80
  6. Step 6: Final answer
    x = 84,878.16

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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.